Cleanup of PF rule generation and fix for missing rules for group interface network

(cherry picked from commit 669efa5f)
(cherry picked from commit cccec5ab)
(cherry picked from commit a203c699)
(cherry picked from commit c37e82a9)
(cherry picked from commit 25eeb7c9)
(cherry picked from commit e839ef2c)
(cherry picked from commit 587e6573)
(cherry picked from commit 7f76c06c)
(cherry picked from commit 00dfec8a)