Clarify log message if server sends back unknown status for HELLO
Clarify log message if server sends back unknown status for HELLO

Change-Id: Ie294812d2f5ddc98898028bdc6c7578181a4c69e
Reviewed-on: http://review.couchbase.org/77564
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>

avsej/libcouchbase,mody/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,kojiromike/libcouchbase,mody/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase