CI: correct test selection propagation for service-specific tests and run them conditionally

[k-a-il]

Motivation

This PR addresses two current issues with test selections, specifically:

• missing propagation of test selection files to service-specific tests
• issue with unnecessary job startup if no service-specific code was updated

Changes

• Add TESTSELECTION_PYTEST_ARGS to PYTEST_ARGS for provider specific tests
• Add a step to identify changed services and use its output to conditionally trigger service-specific jobs

Testing

• Test that only Integration tests are triggered if S3 test has been changed https://github.com/localstack/localstack/pull/12750
• Test that Integration tests and DynamoDB-v2 tests are triggered https://github.com/localstack/localstack/pull/12751
• Test that all tests are triggered when workflow is triggered on master

[github-actions[bot]]

Test Results - Preflight, Unit

21 630 tests  +17   19 973 ✅ +15   7m 2s ⏱️ +2s      1 suites ± 0    1 657 💤 + 2       1 files   ± 0        0 ❌ ± 0 

Results for commit 73f835e4. ± Comparison against base commit 3bbf9442.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Test Results (MA/MR) - Preflight, Unit

21 630 tests  +17   19 973 ✅ +15   6m 8s ⏱️ -13s      1 suites ± 0    1 657 💤 + 2       1 files   ± 0        0 ❌ ± 0 

Results for commit 73f835e4. ± Comparison against base commit 3bbf9442.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Test Results (amd64) - Acceptance

7 tests  ±0   5 ✅ ±0   3m 22s ⏱️ +15s 1 suites ±0   2 💤 ±0  1 files   ±0   0 ❌ ±0 

Results for commit 73f835e4. ± Comparison against base commit 3bbf9442.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Test Results (amd64, MA/MR) - Acceptance

7 tests  ±0   5 ✅ ±0   3m 11s ⏱️ -8s 1 suites ±0   2 💤 ±0  1 files   ±0   0 ❌ ±0 

Results for commit 73f835e4. ± Comparison against base commit 3bbf9442.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Test Results - Alternative Providers

987 tests   589 ✅  30m 19s ⏱️   4 suites  398 💤   4 files      0 ❌

Results for commit 82634230.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Test Results (MA/MR) - Alternative Providers

987 tests   589 ✅  30m 34s ⏱️   4 suites  398 💤   4 files      0 ❌

Results for commit 82634230.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Test Results (amd64) - Integration, Bootstrap

    5 files  ± 0      5 suites  ±0   2h 22m 34s ⏱️ + 2m 13s 5 242 tests +12  4 313 ✅ +12  929 💤 ±0  0 ❌ ±0  5 248 runs  +12  4 313 ✅ +12  935 💤 ±0  0 ❌ ±0 

Results for commit 73f835e4. ± Comparison against base commit 3bbf9442.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Test Results (amd64, MA/MR) - Integration, Bootstrap

    5 files  ± 0      5 suites  ±0   2h 22m 50s ⏱️ +24s 5 242 tests +12  4 313 ✅ +12  929 💤 ±0  0 ❌ ±0  5 248 runs  +12  4 313 ✅ +12  935 💤 ±0  0 ❌ ±0 

Results for commit 73f835e4. ± Comparison against base commit 3bbf9442.

:recycle: This comment has been updated with latest results.