PBM use pytest shard for parallelization

[olexandr-havryliak]

Shards tests based on a hash of their test name enabling easy parallelism across machines

[Copilot]

Pull Request Overview

Introduce pytest-shard to split the test suite across multiple CI jobs, enabling parallel execution and faster end-to-end runs.

• Add pytest-shard to the test container image.
• Update the GitHub Actions workflow to run tests in 5 shards instead of keyword-filtered groups.
• Add markers (@pytest.mark.skip, @pytest.mark.jenkins) and minor test renames/cleanup.

Reviewed Changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pbm-functional/pytest/test_timeseries.py	Add skip markers, rename tests, and remove an unused assignment to streamline test execution under sharding.
pbm-functional/pytest/test_sharded_chunks.py	Add jenkins marker to scope long-running tests.
pbm-functional/pytest/test_drop_pitr.py	Add skip marker and rename a test.
pbm-functional/pytest/test_PBM-1497.py	Add jenkins marker to a long-running test.
pbm-functional/pytest/test_PBM-1355.py	Add skip and jenkins markers; adjust test names.
pbm-functional/pytest/test_PBM-1265.py	Add skip marker and rename a test.
pbm-functional/pytest/test_PBM-1252.py	Add jenkins marker to a long-running test.
pbm-functional/pytest/test_PBM-1223.py	Add jenkins marker to a parameterized test.
pbm-functional/pytest/test_PBM-1090.py	Add jenkins marker for CI scoping.
pbm-functional/pytest/test_PBM-1058_upgrade.py	Add skip marker and rename a test.
pbm-functional/pytest/Dockerfile-testinfra	Install pytest-shard in the test container to enable sharded runs.
.github/workflows/PBM-FULL.yml	Switch from keyword-filtered runs to shard-based parallel runs across 5 jobs.

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[Copilot]

Pull Request Overview

Copilot reviewed 13 out of 14 changed files in this pull request and generated 1 comment.

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