Fix Stream writer, has been broken with syslog fix
Change all UserBackends to a lazy connection-behavior

refs #5506
Change setup behavior of the AuthenticationManager to a lazy approach

The authentication manager should only try to set up all backends when
necessary. Remove the backend setup from the constructor and call it only when it is actually needed.

fixes #5506
Merge branch 'bugfix/ldapuserbackend-lazy-loading-5506'
Trace option for CLI commands

Added --trace to show full stack trace if an exception is thrown

fixes #5555
Merge branch 'master' of git.icinga.org:icingaweb2