[BZ 994267] - LDAP login causes Invalid path was requested error to appear in server log - Ignoring 2 particular the log messages coming from the JSF layer.
Bug 1139735 - There is no way how to upgrade HA environment having two servers each with a co-located storage node when C* schema changes are included

Fix issues with previous commit.

Prevent the DriftDetector from running in infinite loop:
* when the queue is full of disabled schedules
* when a previous snapshot file exists