CBLT-224:  don't put quotes around path variables that contain wildcards

Change-Id: I95968c1ac5e42148f5fc647a4a8819f9d44becb5
Reviewed-on: http://review.couchbase.org/33721
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>