The remote execution views in katello should require view_hosts, not edit_hosts permision
In #19336, we added the remote-execution specific paths to the edit_hosts permission.
However, the rex plugin itself requires just view_hosts for this. as the execution permission
is given by another permission, that is granted by Remote Execution User role: the remote execution
user role doesn't grant edit_hosts. Therefore we should change the required role is Katello for this purposes as well
Fixes #21794 - use view_hosts for rex actions
The Remote Execution User needs just view_hosts (side by side to
execute_job_invocation) permission and there is no reason at all
to use edit_hosts permission for this purposes in Katello.
This way, the `Remote Execution User` role will work correctly
for Katello use-cases as well, which was not the case, when using