selinux_config_policy should handle whitespace

Here we have a regex that is grabbing the selinux_config_policy from /etc/selinux/config. We had a customer here who had a space in their /etc/selinux/config which was breaking the regex as shown here

This, and any other relevant regexes should be able to handle some whitespace at the end of the setting as it does not affect the functionality of SELinux at all.

Suggested fix: Add whitespace to regex