Auto set PATH in common for root

Fixes #265
Revert "$wgWhitelistRead; make it a single line"

This reverts commit 358c3349fe62d65224cf3a68e98d3293aaa1f6d1.
Revert "Auto set PATH in common for root"

This revets commit 9b5515973577b4dc2e2b701d94ab95607b58b7e4.
mariadb: never report password change as true
enable IPv6 in ufw (dual manages iptables and ip6tables)
remove prod1 from ansible; keep in nagios
recycle prod1/nagios mysql rule for prod6/nagios
add dns check for orain.org on web servers
fix SSL check
add memcached check, group, plugin and create a plugin folder and task
add mediawiki job queue check
Merge branch 'master' of https://github.com/orain/ansible-playbook
fix syntax
move plugins stuff to common
move nrpe_local.cfg copy to common (already in common)
fix permissions for check_job_queue