CBQE 2158 - Test ddoc_ops_during_compaction failing with multiple buckets

Change-Id: I67a31553dc39569ea19d4f0735bd4ee34ca56f3e
Reviewed-on: http://review.couchbase.org/35045
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Reviewed-by: Meenakshi Goel <meenakshi.goel@globallogic.com>
Tested-by: Meenakshi Goel <meenakshi.goel@globallogic.com>