MB-6972:  use new V3 cert:  D6A0C30E

Change-Id: I0d7b6b3bbcdb6e59046679a7f06f0f1ba02c8c26
Reviewed-on: http://review.couchbase.org/41511
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>