Add unit tests to for {runtime,priority}ClassName

These unit tests go over all the possible pods using the
mount feature and make sure they are all listed in the
runtime and priority class, which will make sure we don't
miss any.

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Change-Id: Iba2e24bebd70f0d99f44566a1b0f115e4faa8f5b
(cherry picked from commit 60bb74c60ea5b503c2348784656f0cb04784e954)
Depends-On: Ib967555a008a7bddb0529750937864f6b001e772
diff --git a/roles/manila/vars_test.go b/roles/manila/vars_test.go
index 627920b..14f578f 100644
--- a/roles/manila/vars_test.go
+++ b/roles/manila/vars_test.go
@@ -36,4 +36,6 @@
 	require.NoError(t, err)
 
 	testutils.TestDatabaseConf(t, vals.Conf.Manila.Database)
+	testutils.TestAllPodsHaveRuntimeClass(t, vals)
+	testutils.TestAllPodsHavePriorityClass(t, vals)
 }