CBSE-351: Wait for node ready when create bucket

When creating a bucket, query all node status for this bucket and
return when all nodes are healthy, i.e. vbuckets are ready to use

Change-Id: I510bd0e9bbce70dc3b845e28993d6bc811a905aa
Reviewed-on: http://review.couchbase.org/24145
Reviewed-by: Steve Yen <steve.yen@gmail.com>
Tested-by: Bin Cui <bin.cui@gmail.com>
CBSE-351: Wait for a while before querying bucket status

Sometimes bucket is not fully created yet. So "Object Not Found"
message can be returned if querying bucket status right away.

Change-Id: Ic84068de6bb111484ea8f7c4507985bb5afd9c4b
Reviewed-on: http://review.couchbase.org/24214
Tested-by: Bin Cui <bin.cui@gmail.com>
Reviewed-by: Pavel Paulau <pavel.paulau@gmail.com>