MB-100 Always grab options for databases from rep document.

Change-Id: Ib442302a2e5e8be51ff33588ce3ada760dbf65b7
Reviewed-on: http://review.couchbase.org/28165
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>