Added @AwaitsFix for failing PluginManagerIT test after talking to spinscale

core/src/test/java/org/elasticsearch/plugins/PluginManagerIT.java

@@ -502,6 +502,7 @@ public class PluginManagerIT extends ESIntegTestCase {
     }
 
     @Test
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/pull/12766")
     public void testThatBasicAuthIsSupportedWithHttps() throws Exception {
         assumeTrue("test requires security manager to be disabled", System.getSecurityManager() == null);