* chore: remove integration tests for the deprecated v1beta2 write

* docs: update references to v1beta2 in JsonStreamWriter samples

In this PR:
- Generate a selected list of libraries based on `library_name`

This PR is a preparation for improve nightly generation.

Note that we need to change the [new library generation
workflow](https://github.com/googleapis/google-cloud-java/blob/main/.github/workflows/generate_new_client_hermetic_build.yaml)
in google-cloud-java to accommodate this change because
`library_generation/generate_repo.py` has replaced
`--target-library-api-shortname` with `--target-library-names`.

In todays's nightly generation job
([log](https://github.com/googleapis/google-cloud-java/actions/runs/8457767424/job/23170489394)),
no actual generation is done.

I think this is because `main` method has been removed by #2598.

In this PR:
- In the integration test, run `generate_repo.py` and
`generate_pr_description.py` in docker container.
- Remove test image in cloud build.

Context: 
In this
[log](https://github.com/googleapis/google-cloud-java/actions/runs/8445620169/job/23133097820),
the nightly generation job only took 3 mins. After investigation, we
found out that removing `main` method in `generate_repo.py` (#2598)
caused the CLI is not running despite that the job returns successfully.

This non-explicit failure demonstrated that there's difference between
calling CLI (`generate` method in `generate_repo.py`) and its
implementation (`generate_from_yaml` method in `generate_repo.py`).

We decided to change the integration test to run the CLI in docker
container, rather than testing `generate_from_yaml` because it is the
containerized CLI will be used in downstream libraries.

🤖 I have created a release *beep* *boop*
---


<details><summary>2.39.0</summary>

##
[2.39.0](googleapis/sdk-platform-java@v2.38.1...v2.39.0)
(2024-04-18)


### Features

* add `libraries_bom_version` to generation configuration
([#2639](googleapis/sdk-platform-java#2639))
([76eb62b](googleapis/sdk-platform-java@76eb62b))
* Add ChannelPoolSettings Getter for gRPC's ChannelProvider
([#2612](googleapis/sdk-platform-java#2612))
([c8dae8f](googleapis/sdk-platform-java@c8dae8f))
* add config change
([#2604](googleapis/sdk-platform-java#2604))
([a8c93b5](googleapis/sdk-platform-java@a8c93b5))
* add entry point
([#2616](googleapis/sdk-platform-java#2616))
([f5492bb](googleapis/sdk-platform-java@f5492bb))
* add generation config comparator
([#2587](googleapis/sdk-platform-java#2587))
([3461166](googleapis/sdk-platform-java@3461166))
* Add JavadocJar Task to build.gradle for self service libraries
([#2593](googleapis/sdk-platform-java#2593))
([a66df18](googleapis/sdk-platform-java@a66df18))
* Client/StubSettings' getEndpoint() returns the resolved endpoint
([#2440](googleapis/sdk-platform-java#2440))
([7cf0d8f](googleapis/sdk-platform-java@7cf0d8f))
* generate selected libraries
([#2598](googleapis/sdk-platform-java#2598))
([e4572d1](googleapis/sdk-platform-java@e4572d1))
* Validate the Universe Domain inside Java-Core
([#2592](googleapis/sdk-platform-java#2592))
([a5e1141](googleapis/sdk-platform-java@a5e1141))


### Bug Fixes

* add main to `generate_repo.py`
([#2607](googleapis/sdk-platform-java#2607))
([df39521](googleapis/sdk-platform-java@df39521))
* correct deep-remove and deep-preserve regexes
([#2572](googleapis/sdk-platform-java#2572))
([7d59fa1](googleapis/sdk-platform-java@7d59fa1))
* first attempt should use the min of RPC timeout and total timeout
([#2641](googleapis/sdk-platform-java#2641))
([806a52e](googleapis/sdk-platform-java@806a52e))
* remove duplicated calls to AutoValue builders
([#2636](googleapis/sdk-platform-java#2636))
([c883b8f](googleapis/sdk-platform-java@c883b8f))
* remove unnecessary slf4j and AbstractGoogleClientRequest native image
configs
([9cb7c09](googleapis/sdk-platform-java@9cb7c09))
* remove unnecessary slf4j and AbstractGoogleClientRequest native image
configs
([#2628](googleapis/sdk-platform-java#2628))
([9cb7c09](googleapis/sdk-platform-java@9cb7c09))


### Dependencies

* update arrow.version to v15.0.2
([#2589](googleapis/sdk-platform-java#2589))
([0947407](googleapis/sdk-platform-java@0947407))
* update dependency
com.google.cloud.opentelemetry:detector-resources-support to v0.28.0
([#2649](googleapis/sdk-platform-java#2649))
([079bcff](googleapis/sdk-platform-java@079bcff))
* update dependency gitpython to v3.1.41 [security]
([#2625](googleapis/sdk-platform-java#2625))
([018e9a9](googleapis/sdk-platform-java@018e9a9))
* update dependency net.bytebuddy:byte-buddy to v1.14.13
([#2646](googleapis/sdk-platform-java#2646))
([5a79cd2](googleapis/sdk-platform-java@5a79cd2))
* update dependency org.threeten:threeten-extra to v1.8.0
([#2650](googleapis/sdk-platform-java#2650))
([5666adb](googleapis/sdk-platform-java@5666adb))
* update dependency org.threeten:threetenbp to v1.6.9
([#2602](googleapis/sdk-platform-java#2602))
([767eec1](googleapis/sdk-platform-java@767eec1))
* update dependency org.threeten:threetenbp to v1.6.9
([#2665](googleapis/sdk-platform-java#2665))
([563d8ae](googleapis/sdk-platform-java@563d8ae))
* update google api dependencies
([#2584](googleapis/sdk-platform-java#2584))
([22733b1](googleapis/sdk-platform-java@22733b1))
* update googleapis/java-cloud-bom digest to 7071341
([#2608](googleapis/sdk-platform-java#2608))
([8f34fe7](googleapis/sdk-platform-java@8f34fe7))
* update netty dependencies to v4.1.109.final
([#2597](googleapis/sdk-platform-java#2597))
([6b6939e](googleapis/sdk-platform-java@6b6939e))
* update opentelemetry-java monorepo to v1.37.0
([#2652](googleapis/sdk-platform-java#2652))
([708cf7f](googleapis/sdk-platform-java@708cf7f))
* update protobuf dependencies to v3.25.3
([#2491](googleapis/sdk-platform-java#2491))
([e2235a8](googleapis/sdk-platform-java@e2235a8))
* update slf4j monorepo to v2.0.13
([#2647](googleapis/sdk-platform-java#2647))
([2e3d813](googleapis/sdk-platform-java@2e3d813))
</details>

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

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

…o v1.143.0 (#2598)

…o v1.143.0 (#2598)

…oogleapis#2598)

* feat: add getter for universe domain in JwtCredentialsWithAudience