CBLT-332:  ADD 16G sd-card to AVD to see if it will run unit tests

Change-Id: Ifbe0db99f048f12efe932c307b6554e2b91daaf4
Reviewed-on: http://review.couchbase.org/41795
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>