The way we allow systemd-logind to see files in /proc on all flavors of EL9 is broken

[michael-riddle]

If the hidepid value for the /proc mount is set in el9, it will be a string like "invisible" or "default", however, the code in the install.pp manifest attempts to compare the value of hidepid to an integer, which is fine in other OS flavors because it returns an integer. However, in el9 it returns a string and then errors out because its trying to see if "invisible" > 0. We need to rework this part of the code to be more robust.