Mute failing WatcherRestartIT.testWatcherRestart test (#69919) (#69929)

Author: danhermann

x-pack/qa/rolling-upgrade/src/test/java/org/elasticsearch/upgrades/WatcherRestartIT.java

@@ -32,6 +32,7 @@ public class WatcherRestartIT extends AbstractUpgradeTestCase {
 
     private static final String templatePrefix = ".watch-history-";
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/69918")
     public void testWatcherRestart() throws Exception {
         client().performRequest(new Request("POST", "/_watcher/_stop"));
         ensureWatcherStopped();