Added all items from CIS Section 7 Levels 1 & 2
Switched to ufw and enabled it.
Merge remote-tracking branch 'origin/master' into ubuntu-support-section7

Conflicts:
	tasks/main.yml
Added sudo to commands altering privileged info, added handler to deal with route cache flushes as needed.
Switched to loops for all places appropriate
Readded disable_ipv6
Merge pull request #6 from waveaccounting/ubuntu-support-section7

Added all items from CIS Section 7 Levels 1 & 2