Created the apache::mod::shib class to install the mod_shib Shibboleth module for Apache2

http://shibboleth.net/
create a proper mapping in apache::params for mod_shib
Use augeas to update the shibboleth admin
define a shibboleth sso resource
Stubbing out metadata for shib
Download metadata and metadata certificate from provider.
Create a resource for downloading attribute map files
Define the back end certifiate as a resource because there will only be one.
Documentation (and a few tweaks to make code match docs)
Need to force key generation to overwrite old key.
Try a spec test for mod_shib for Debian... will need to work on the Red Hat variant.
Needs a variable from apache::mod::shib and updates test
added spec test for metadata resource definition
Create spec test for sso resource definition