stop spinner in case of bad response
stop spinner in case of bad response

Change-Id: I991dfc7d014d6da97b564883ecf24fcd444adc6b
Reviewed-on: http://review.couchbase.org/24226
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

ronniedada/litmus,couchbase/cbagent,couchbase/cbmonitor,pavel-paulau/cbagent,couchbase/cbmonitor,vmx/cbagent,mikewied/cbagent,ronniedada/litmus