Run tests of the contrib extensions

[a-masterov]

Problem

We don't test the extensions, shipped with contrib

Summary of changes

The tests are now run

[github-actions]

7348 tests run: 6968 passed, 1 failed, 379 skipped (full report)

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Failures on Postgres 17

• test_metrics_normal_work: release-x86-64

# Run all failed tests locally:
scripts/pytest -vv -n $(nproc) -k "test_metrics_normal_work[release-pg17]"

Flaky tests (5)

Postgres 17

• test_nbtree_pagesplit_cycleid: debug-x86-64

Postgres 16

• test_metrics_normal_work: release-x86-64

Postgres 15

• test_location_conf_churn[2]: release-x86-64
• test_physical_replication_config_mismatch_max_locks_per_transaction: release-arm64

Postgres 14

• test_location_conf_churn[2]: release-x86-64

Test coverage report is not available

_{The comment gets automatically updated with the latest test results
c8d070e at 2025-01-17T17:44:42.199Z :recycle:}