Merge pull request #5 from cyberswat/DEV-163

Updating to SimpleCov
updated rake spec task to default to both ENV tests
inital ldap ubuntu sssd config
removed secret file reference
updated yubico recipe to install labpam-yubico package from standard ubuntu respository
removed ubuntu 12.04
updated common-auth for yubikey in ubuntu
updated pam.d/common-auth for yubico/ubuntu
removed refernece to /etc/ldap.conf / nmdbase.ldap.path
removed refernece to /etc/ldap.conf / nmdbase.ldap.path.
updated ldap spec to support ubuntu ssd changes started on yubico
updated ubuntu yubico rpsec tests
updated serverspec tests for ubuntu/sssd
updated rhel serverspec tests
refacter rspec test for better multiple OS tests
continued - refactering rspec test for better multiple OS tests
updated default_spec to support tags
cleanup
updated ssl spec to support tags
Rubocop updates.