mon: Monitor: propagate return for functions called for admin socket

Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
fixup against "refactor how we output to syslog"

Signed-off-by: Joao Eduardo Luis <jeclui@gmail.com>
mon: Monitor: observe log client config changes

Signed-off-by: Joao Eduardo Luis <jeclui@gmail.com>