7.2.4

Bug

#419 Fixing the nagios_interval logic and readme.
#421 Fixing loading of pagerduty databag contacts.
#430 Fixing loading of timeperiods out of databag with ducktyping.
#437 Fixing loading of unmanaged_host databag regards to environments.
#441 Enable setting of Fixnum's within nagios configuration attributes.

Improvement

#426 Added command: service_notify_by_sms_email.
#435 Adding pagerduty.cgi and needed packages