Update to 8.0, this is a collaborative effort between Daniel Morante and
myself.

• update to 8.0
• make it possible to mount gluster volumes on boot [1]
• reset maintainer [1], I would have set it to ports@ but Daniel volunteered to maintain the port
• add pkg-message to point out that procfs is required for some operations like "gluster volume status" which is also required for self healing. [2]

This version works although I still see the same memory leak as with the
3.X series.

PR: 236112 [1], 223671 [2]
Submitted by: Daniel Morante <daniel@morante.net>, flo
Obtained from: https://github.com/tuaris/freebsd-glusterfs7
Differential Revision: D25037