Title: #334: Print a warning when enumeration is requested but disabled
Patch looks good to me and also addresses @lslebodn's comment.
I am still not persuaded that it is the best solution for ticket
I'm proposing to log an explanatory message when enumeration is
requested by a client for the first time so anyone can easily see it in logs.
There is a difference between "sssd is started" and "enumeration is
But message is not logged when "enumeration is requested" but when sssd is
See the full comment at https://github.com/SSSD/sssd/pull/334#issuecomment-318753983