* Upgrade actions/checkout from v3 to v4.
* Upgrade actions/setup-java from v3 to v4.
* Upgrade dorny/paths-filter, actions/cdache/restore, actions/stale to v3, v4 and v9 respectively.
* Add a GHA label for .github/** and skip UT/IT on .github files.
* remove skipping UT/IT on .github/** changes.
Our CI system has a lot of tests. And much of this testing is really unnecessary for most of the PRs. This PR adds some checks so we can skip these expensive tests when we know they are not necessary.
Currently, there is no way to run ITs if unit-tests fail on coverage. This PR allows Revised, Standard ITs to run even when unit-tests fail on coverage errors, still failing the workflow. This PR also fixes existing GHA workflow naming.
* migrate UTs form Travis to GHA
* update permissions
* rename file
* set fetch depth to 1
* debugs remote branches
* test with github.ref variable
* fetch github.base_ref for diff
* nit
* test git diff
* run tests
* test code coverage failure scenario
* nit
* nit
* revert code changes
* revert code changes
* Setup diff-test-coverage before tests
* build distribution module at end in packaging check
* nit
* remove redundant steps in static-checks workflow
* drop jdk8 unit tests from Travis