Add a step in distribution test which checks if any of the artifacts exceeds 80 MB since Pypi has a per-file size limit.
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Closes#35831
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35831 from XuanWang-Amos:dist_test_add_size_check de50f20e14
PiperOrigin-RevId: 605664419
* add release version of grpc_distribtests_* jobs .cfg files
* make grpc_distribtests_ruby more aligned with other single-job distribtests
* dont hide packages from build_artifacts step for python an php
* add cmake support for ccache
* cleanup: use --env-file for docker run invocations
* make python build compatible with using ccache
* enable building using ccache in selected kokoro jobs
* print ccache stats and the end of run_tests.py
* support "move and respawn" for kokoro jobs
* delete_nonartifacts.sh no longer needed
* bazel distribtest dont publish any artifacts
* try the altsrc respawn for selected jobs
* use altsrc for all windows CI jobs
* use altsrc for all macos CI jobs
* only move files under src/github
* fix uploading artifacts on windows