start frappy server automatically, if not running yet

when restarting NICOS, the frapy servers should be (re-)started
if not running already with the correct config

commands.py

@@ -101,6 +101,7 @@ def frappy_start(**services):
             if not secnode:
                 continue
             cfginfo = secnode() or ''
+            secnode.restart(secnode.read(), False)  # restart when needed only
         else:
             if cfginfo:
                 new_cfg.append((service, secnode, cfginfo))
@@ -151,7 +152,7 @@ def set_se_list():
 def frappy(*args, main=None, stick=None, addons=None):
     """(re)start frappy server(s) with given configs and load setup if needed
 
-    - without argument: list running frappy servers
+    - without argument: list running frappy servers, restart failed frappy servers
     - frappy('<cfg>'): if available, the standard stick is added too
     - frappy(''): the stick is removed too
     - addons are not changed when not given