Add borader errors detection and catch unknown output as UNKNOWN state.
Add borader errors detection and catch unknown output as UNKNOWN state.

We now also consider configuration file not being loaded by the conntrackd
as a valid error.  Additionally, we catch the state where conntrackd daemon
is indeed running but -s cache is returning something that we have not seen
before which might indicate a potential issue ...

Signed-off-by: Krzysztof Wilczynski <9bf091559fc98493329f7d619638c79e91ccf029@linux.com>

kwilczynski/nagios-nrpe-checks