MB-100 Name global parameters similarly to the per rep ones.

To avoid additional confusion.

Change-Id: Ibab7c02a3cff6bff1a85228bb4b723557ebb5464
Reviewed-on: http://review.couchbase.org/28169
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>