When converting PackageListingAcl to JSON add option to exclude PackageListing
Let PackageListingAcl.get_acl_packager return both PackageListingAcl and PackageListing
Update the way the JSON is built when returning the packager's ACLs

This is due to the change in PackageListingAcl.get_acl_packager that
returns now the ACL as well as the PackageListing object.
Adjust the unit-tests for the change in PackageListingAcl.get_acl_packager
Check the fas_name and the ACL and use a loop to check all the results returned
Merge pull request #111 from fedora-infra/optimize_packager_acls

Optimize packager acls