simplify getting the test names (#1416)

* fix

* make it a constant

* placeholder commit

.github/workflows/composites/maven-build-with-dry-run-for-tests/action.yaml

@@ -8,9 +8,9 @@ runs:
       run: |
           # find all the tests that are supposed to be run, but don't actually run them.
           # this is achieved via: 'spring.cloud.k8s.skip.tests=true' in DisabledTestsCondition
-          ./mvnw clean install -B -Dskip.build.image=true -Dspring.cloud.k8s.skip.tests=true \
+          ./mvnw test -B -Dskip.build.image=true -Dspring.cloud.k8s.skip.tests=true \
                 -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=error \
-                -T 1C > /tmp/tests.txt
+                -T 1C -q > /tmp/tests.txt
 
     - name: show result
       if: always()