add attributes for pagerduty contact's service_notification_options and host_notification_options
Add more tunable directives for default host

Adds `check_period`, `check_command` & `notification_options` attributes
for tuning the default host template. Also added a bunch of docs for the
`node['nagios']['default_host']` attributes.
single quotes make rubocop a happy robot
sort hostgroups so they don't get updated on each run
[COOK-3723] Support regexp_matching in Nagios
remove empty line, thanks tas50
Remove unncessary range searches that break chef-zero
Lock Rubocop at 0.13.1.

The pessimistic lock doesn't really work when an application is not yet at the first version.  0.13 -> 0.14 introduced major changes and fails the travis build.
Switch the default to htauth
Merge pull request #201 from tas50/COOK-3731

[COOK-3731] Remove unncessary range searches that break chef-zero
Merge pull request #202 from tas50/COOK-3730

[COOK-3730] Switch the default to htauth
Merge pull request #163 from isbaran/master

[COOK-3696] - sort hostgroups so they don't get updated on each run
Remove extra ()s from the sorta
Merge pull request #199 from afirth/COOK-3723

[COOK-3723] Support regexp_matching in Nagios
Left align to avoid whitespace in hostgroups template
Merge pull request #44 from josephholsten/warn-without-pagerduty

[COOK-1725] add attributes for pagerduty contact's service_notification_options and host_notification_options
Merge pull request #194 from josephholsten/more-default-host-tunables

[COOK-3695] Add more tunable directives for default host