MB-13197: Fix to correctly catch exceptions in auditconfig
MB-13197: Fix to correctly catch exceptions in auditconfig

Change-Id: I940d070938933f33b94000ed9ee8087deb4979ba
Reviewed-on: http://review.couchbase.org/45851
Tested-by: Daniel Owen <b3fc0e1a51f252986e60be7da121b74d3ac6845f@couchbase.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

owendCB/memcached,mrkwse/memcached,couchbase/memcached,mrkwse/memcached,daverigby/memcached,cloudrain21/memcached-1,cloudrain21/memcached-1,couchbase/memcached,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,mrkwse/memcached,daverigby/memcached,couchbase/memcached,owendCB/memcached,daverigby/memcached,owendCB/memcached,cloudrain21/memcached-1,mrkwse/memcached,cloudrain21/memcached-1,owendCB/memcached,daverigby/memcached,couchbase/memcached,daverigby/kv_engine