Add a detection plugin for the crash check plugin
Add a detection plugin for the crash check plugin

Simply check if a crash kernel is loaded to determine if the crash check
plugin should be enabled. If enabled, it is currently assumed, that crash
dumps are stored under /var/crash.

Change-Id: If17489c76569c4239378b16e2a75c080937b3ced
Signed-off-by: Juerg Haefliger <71fc62073a74bb0183c934981fc15cc10b5a6493@hp.com>

sapcc/monasca-agent,sapcc/monasca-agent,sapcc/monasca-agent