Fix accidental @Test deletion from []

Accidentally dropped the annotation while merging changes

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=150350917

javatests/google/registry/flows/host/HostUpdateFlowTest.java

@@ -933,6 +933,7 @@ public class HostUpdateFlowTest extends ResourceFlowTestCase<HostUpdateFlow, Hos
         .doesNotHaveStatusValue(StatusValue.CLIENT_UPDATE_PROHIBITED);
   }
 
+  @Test
   public void testFailure_clientUpdateProhibited() throws Exception {
     createTld("tld");
     persistResource(