WIP: Improve config parsing, make --verbose and --config-file global options

Bonus: Generalize and reuse cmd_ssh()

Signed-off-by: InsanePrawn <insane.prawny@gmail.com>

forwarding.py

@@ -1,13 +1,11 @@
 import click
 import subprocess
-from logger import logging, setup_logging, verbose_option
+from logger import logging
+from ssh import cmd_ssh
 
 
 @click.command(name='forwarding')
-@verbose_option
-def cmd_forwarding(verbose):
-    setup_logging(verbose)
-
+def cmd_forwarding():
     result = subprocess.run([
         'sysctl',
         'net.ipv4.ip_forward=1',
@@ -41,18 +39,7 @@ def cmd_forwarding(verbose):
         logging.fatal(f'Failed set iptables rule')
         exit(1)
 
-    result = subprocess.run([
-        'ssh',
-        '-o',
-        'GlobalKnownHostsFile=/dev/null',
-        '-o',
-        'UserKnownHostsFile=/dev/null',
-        '-o',
-        'StrictHostKeyChecking=no',
-        '-t',
-        'kupfer@172.16.42.1',
-        'sudo route add default gw 172.16.42.2',
-    ])
+    result = cmd_ssh(cmd=['sudo route add default gw 172.16.42.2'])
     if result.returncode != 0:
         logging.fatal(f'Failed to add gateway over ssh')
         exit(1)