don't place local node first in servers list

It was originally done for moxi latency stats work that was actually
abandoned afterwards (http://review.membase.org/4499).

This change fixes discrepancy between nodesExt list of terse bucket
info and server's list of vbucket map.

Change-Id: I7b27183d1b3e2fb8a9cb06bdd35565af08b08c62
Reviewed-on: http://review.couchbase.org/40096
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>