net-mgmt/netmagis-* update 2.2.2 -> 2.3.0

Additional changes not in pr:

• Remove post-install do-nada
• Set NO_ARCH where appropriate
• DISTVERSION -> PORTVERSION
• use /var/netmagis instead of /usr/local/var/netmagis
• remove @dirrm[try] from pkg-plists
• remove @exec mkdir -p from pkg-plists
• sort uses
• relocate rc scripts to the slave they belong to
• pull conditional logic out and into the slaves they affect
• add metro/ws/gengraph to SHEBANG_FILES

UPDATING:
Upgrading from a previous version requires
a database schema upgrade.
See http://netmagis.org/upgrade.html

PR: 201124
Submitted by: pdagog@gmail.com (maintainer)