ci: fix ci test encryption-pvc-kms-vault-token-auth

we need to wait for the rgw pod to be delete and not
only the cephobjectsore, sometime the pod could be in
terminating state. Also, in some place it require proper
command to wait for pod to be ready/delete and get the
pod name only.

Signed-off-by: subhamkrai <srai@redhat.com>
(cherry picked from commit 70f29be748)

.github/workflows/canary-integration-test.yml

@@ -972,6 +972,8 @@ jobs:
           kubectl delete -f tests/manifests/test-object.yaml
           yq write -i tests/manifests/test-object.yaml "spec.security.kms.connectionDetails.VAULT_SECRET_ENGINE" transit
           timeout 120 bash -c 'while kubectl -n rook-ceph get cephobjectstore my-store; do echo "waiting for objectstore my-store to delete"; sleep 5; done'
+          echo "wait for rgw pod to be deleted"
+          kubectl wait --for=delete pod -l app=rook-ceph-rgw -n rook-ceph --timeout=100s
           kubectl create -f tests/manifests/test-object.yaml
           tests/scripts/validate_cluster.sh rgw
           tests/scripts/deploy-validate-vault.sh validate_rgw