Right now we only test with the bundled JDK version in the packaging tests but for other integration tests when RUNTIME_JAVA_HOME is not set.
Since we always set the lather in CI we don't get any coverage with respect to integration tests for the bundled JDK there.

We should move to default to the bundled JDK in CI for everything other than the specific java matrix testing. Since the integ test distribution does not bundle the jdk ( and we don't want it to ) we need a way in the build to provision and use the same jdk as the one we bundle for those tests.