We had some incorrect logic for when selinux is installed and disabled.

This occurred when a hash would be passed in via extra args and the
hash variable behavior was set to 'merge', which resulted in the
variable from extra args replacing the playbook variable.

copied over from the svn module.

Change the uids that we use so that there is a lesser change of collision and check the uid rather than the owner.

Example usage: {{ my_path | expanduser }} # my_path: "~/path/to/file"

Finished file tests with selinux.

File - selinux tests in new framework.

Further updates to the file tests.

Match directory permission with 755 instead of 644

Directories need the execution bit being set therefore instead of 644, it needs 755.