CloudStack CS-15244
Not able to put the host in maintenance mode when one of the host in the cluster has host tag and the other host does not have a host tag. We are also not able to cancel the Maintenance mode.

fixed
reviewed-by: edison

api/src/com/cloud/resource/ResourceState.java

diff --git a/api/src/com/cloud/resource/ResourceState.java b/api/src/com/cloud/resource/ResourceState.java
index cd4afc9..41c54c6 100755
--- a/api/src/com/cloud/resource/ResourceState.java
+++ b/api/src/com/cloud/resource/ResourceState.java
@@ -109,6 +109,8 @@
         s_fsm.addTransition(ResourceState.ErrorInMaintenance, Event.Disable, ResourceState.Disabled);

         s_fsm.addTransition(ResourceState.ErrorInMaintenance, Event.DeleteHost, ResourceState.Disabled);

         s_fsm.addTransition(ResourceState.ErrorInMaintenance, Event.InternalEnterMaintenance, ResourceState.Maintenance);

+        s_fsm.addTransition(ResourceState.ErrorInMaintenance, Event.UnableToMigrate, ResourceState.ErrorInMaintenance);

+        s_fsm.addTransition(ResourceState.ErrorInMaintenance, Event.AdminCancelMaintenance, ResourceState.Enabled);

         s_fsm.addTransition(ResourceState.Error, Event.InternalCreated, ResourceState.Error);

     }

 }