add dialout to l_samenv

+ remove superfluous call to pip command

install.py

@@ -218,7 +218,7 @@ def pip():
                     os.remove(tmpname)
             else:
                 print(pipcmd)
-            unix_cmd(pipcmd, doit, stdout=None)
+            # unix_cmd(pipcmd, doit, stdout=None)
             show.dirty = True
 
 
@@ -566,6 +566,8 @@ def handle_config():
             if servicecfg and to_start.get('service') is None:
                 to_start[service] = 'restart'
 
+    if 'dialout' not in unix_cmd('id l_samenv'):
+        do_cmd('usermod -a -G dialout l_samenv')
     pip()
     if reload_systemd:
         do_cmd('systemctl daemon-reload')