Ticket 49783 - UI - add server configuration backend
Description: This patch pulls in all the cn=config values and poplues the UI.
it also allows you to save values to the server.
Also cockpit can only pull in strerr messages when things fail,
so I had to undue a recent change to redirect stderr to stdout.
https://pagure.io/389-ds-base/issue/49783
Reviewed by: spichugi & vashirov(Thanks!!)