include sanity tests in release test pipeline

Author: pramodbindal

.konflux/tekton/release-test-pipeline.yaml

@@ -20,7 +20,7 @@ spec:
       type: string
       default: quay.io/openshift-pipeline/ci:latest
     - name: TAGS
-      default: "e2e"
+      default: "(e2e | sanity)"
     - name: RELEASE_TEST_TASKS_REPO
       default: https://github.com/openshift-pipelines/operator
     - name: RELEASE_TEST_TASKS_BRANCH