pfSense

Ticket #5624: Welcome dpinger!

Add rc.gateway_alarm script

dpinger always pass 3 parameters to alert_cmd, what can make pfSctl confuse,
This script will be called by dpinger when alarm goes on or off, then
it's going to call pfSctl

Fix indent

Simplify logic and break some long lines, no functional changes

Remove calculated options

Change apinger_default to dpinger_default

Merge pull request #2199 from heper/patch-2

Fixed #5602 by dynamically updating hte help text based on the cert selected.

fix #5563

Code style and white space in etc