Add --rerun-fails flag for release branches (#21721)

* add re-run flag for release branches

* testing

* testing with the test ref

* fix test branch name

* adding packages flag

* fix package names

* joining package names

* fixing EOF error

* fixing packages syntax

* fix syntax

* fixing syntax

* syntax fix

* fix syntax

* moving flag

* test command

* testing success case

* original changes

* Update .github/workflows/test-go.yml

Co-authored-by: Mike Palmiotto <mike.palmiotto@hashicorp.com>

* Update .github/workflows/test-go.yml

Co-authored-by: Mike Palmiotto <mike.palmiotto@hashicorp.com>

---------

Co-authored-by: Mike Palmiotto <mike.palmiotto@hashicorp.com>

.github/workflows/test-go.yml

@@ -239,17 +239,24 @@ jobs:
           fi
 
           # shellcheck disable=SC2086 # can't quote package list
+
+          # On a release branch, add a flag to rerun failed tests
+          if [[ ${{ github.base_ref }} = release/* ]] ; then
+           RERUN_FAILS="--rerun-fails"
+          fi
+
           GOARCH=${{ inputs.go-arch }} \
             go run gotest.tools/gotestsum --format=short-verbose \
               --junitfile test-results/go-test/results-${{ matrix.id }}.xml \
               --jsonfile test-results/go-test/results-${{ matrix.id }}.json \
               --jsonfile-timing-events failure-summary-${{ matrix.id }}${{ inputs.name != '' && '-' || '' }}${{ inputs.name }}.json \
+              $RERUN_FAILS \
+              --packages "${{ matrix.packages }}" \
               -- \
               -tags "${{ inputs.go-tags }}" \
               -timeout=${{ env.TIMEOUT_IN_MINUTES }}m \
               -parallel=${{ inputs.go-test-parallelism }} \
               ${{ inputs.extra-flags }} \
-              ${{ matrix.packages }}
       - name: Prepare datadog-ci
         if: github.repository == 'hashicorp/vault' && (success() || failure())
         continue-on-error: true