Bug 6106: Prevent flood of quarantine messages

Added a "quarantined" flag to the QuarantinedMonitorActor so it only
prints the warning and attempts to restart the karaf container once
(which is invoked indirectly via the caller's Effect callback).

Change-Id: I0a57af729280abded93d1b1a575df1672e52032e
Signed-off-by: Tom Pantelis <tpanteli@brocade.com>
(cherry picked from commit 3066f54d6d2c6206fa5fabc69a795993c68d2d77)