Title: #5683: Fix log levels
As a general question, not related to the patch. Do you think it
would be worth to add a flag for debug messages where a backtrace is not needed? E.g. for
cases where something is not implemented or supported it might be still worth to have this
information on the default log level but a backtrace is not needed.
`information on the default log level but a backtrace is not needed` - this looks like a
description of existing `SSSDBG_IMPORTANT_INFO` log level. I will update PR to make use of
it for `ERR_KCM_OP_NOT_IMPLEMENTED`, thank you.
See the full comment at https://github.com/SSSD/sssd/pull/5683#issuecomment-861500151