Wherever we reference apache user add httpd package requirement

This may be implicitly defined in many of the cases, but we'll go ahead
and make the requirement on httpd package explicit wherever we set
owner or group to 'apache'.

Resolves https://bugzilla.redhat.com/show_bug.cgi?id=1158271
Generate self-signed certs if needed

- also some puppet-lint cleanup on touched files
- add apache license to selbooleans.pp
Merge pull request #317 from sdodson/enterprise-2.2-merge

Wherever we reference apache user add httpd package requirement
Merge pull request #324 from detiber/fixCertIssue

Fix cert issue
Facter 1.6 doesn't have operatingsystemmajrelease fact

Facter 1.6.18 is the latest facter release in EPEL so lets target that.
Modulo operator wasn't introduced until 3.2

Perhaps revisit this in the future. For now we'll assume that if someone is installing with more than 3
datastore nodes they know what they're doing.
Merge pull request #328 from sdodson/facter16

Some compatibility fixes for Puppet 2.7 and Facter 1.6
Fixes for register_dns

- no longer attempt to register the same name multiple times if multiple
  roles on the same host are configured with the same hostname
- update the load balancer dns in the same nsupdate as the host dns
  entries
Resource ordering fixes, cleanup some missing notifies and requires, puppet-lint cleanup