Remove user from hipchat watcher config (#3111)

The validation for watcher settings became stricter in 6.2. As a result, the user
setting in hipchat configuration that is not used now causes the bootstrap
checks to fail. Remove the setting.

Author: russcam

src/Tests/Framework/ManagedElasticsearch/Tasks/InstallationTasks/EnsureWatcherActionConfigurationInElasticsearchYaml.cs

@@ -27,7 +27,6 @@ public override void Run(NodeConfiguration config, NodeFileSystem fileSystem)
 					"  account:",
 					"    notify-monitoring:",
 					"      profile: user",
-					"      user: watcher-user@example.com",
 					"      auth_token: hipchat_auth_token",
 					string.Empty
 				});