Packaging fixes for RPM

Change-Id: I5dd568cdec514df551289040d66c3b4f1fc51d09
Reviewed-on: http://review.couchbase.org/30095
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Tested-by: Sergey Avseyev <sergey.avseyev@gmail.com>