[BUGFIX] Controller changes trigger AOP class rebuild (Revision 1)

This is a pragmatic fix to avoid clearing all caches when
you add an action to a protected controller. Controllers will now
be watched by the FileMonitor to trigger rebuilding the policy
information.

Change-Id: I511464682f0ef5adcfd019899128923af8f70a80
Releases: master, 2.2, 2.1
Revision-Id: fcd3231c080368727d3337092111074155514d54