CBQE-2425: UI: adding new bucket options tests

Change-Id: I3c117f869dfb890a219de91756dc34662c04a99e
Reviewed-on: http://review.couchbase.org/42078
Reviewed-by: Meenakshi Goel <meenakshi.goel@globallogic.com>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>