Remove trailing whitespaces from pcmk notify vars

Ubuntu Pacemaker sent OCF_RESKEY_meta_notify_*
vars with trailing whitespaces thus breaking
RabbitMQ OCF script functionality.

Change-Id: I3e5818bd1f6eed66a98665e519db9dcdca340db7
Closes-bug: #1339080
Merge "Remove trailing whitespaces from pcmk notify vars"