Trap handlers: always log to stdout

Since the scripts are intended to be used as systemd services, there's
no need in separate logging via syslog: systemd will take care of
properly collecting and storing script output. Hence we can drop extra
options and function parameters.

Change-Id: Ifcad1877d45d43b3a2e617775a1c9b256e190591
Related: SYS#4399
4 files changed