Ticket 48870 - Correct plugin execution order due to changes in exop
Bug Description: Due to changes to make exop handling more efficient, an
issue was introduced where the execution of plugins was re-ordered. This meant
the precedence rules when two plugins are equal, were not the same.
Fix Description: Return early when we find the plugin, rather than continuing
to loop to find the "last match"
https://fedorahosted.org/389/ticket/48870
Author: wibrown
Review by: nhosoi, tbordaz (Thanks, and sorry for breaking it ...)