Fix install commands to also pass any args to service units

[jnummelin]

Signed-off-by: Jussi Nummelin jnummelin@mirantis.com

Issue
Currently k0s install worker <token> drops the token from the service unit.

What this PR Includes
This PR adds all args to the service unit file:

/ # ./k0s install worker "foobar"
INFO[2021-03-19 11:33:52] Installing k0s service                       
/ # cat /etc/init.d/k0sworker 
#!/sbin/openrc-run
supervisor=supervise-daemon
name="k0s worker"
description="k0s - Zero Friction Kubernetes"
command=/k0s
command_args="worker foobar "
name=$(basename $(readlink -f $command))
supervise_daemon_args="--stdout /var/log/${name}.log --stderr /var/log/${name}.err"
depend() { 
        need net 
        use dns 
        after firewall
}