Problem:
--------

If an error occurs in a participant MySQL server during schema
distribution, the participant returns an error to the coordinator
and logs details about the failure in the error log. However,
there's no indication in the client of the originating MySQL
server that the DDL statement was unsuccessful in the
participant(s)

Fix:
----

Display warning(s) in the client to indicate that the schema
distribution operation has failed in a participant. These
warnings are designed to be generic as they serve to simply
indicate to the user that something has gone wrong in the
participant MySQL servers during distribution. Further
details about the failure can be found in the participant
MySQL server's error log as before

Change-Id: Ifccc51988c7c4c3949616417b2be184bb8fc1b97