Functions to get number of nodes and vbuckets on the node
Functions to get number of nodes and vbuckets on the node

Change-Id: I1b20dc4e2c15739e49745b104999838d078dcc5c
Reviewed-on: http://review.couchbase.org/59757
Tested-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Reviewed-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

brett19/gocb