Disable the fs.flag abort_start() routine if the resource is in a vol…

… object

Vol objects are slaves of their consumer services, if an abort must be
decided its up to the svc.

opensvc/drivers/resource/fs/flag/__init__.py

@@ -57,6 +57,9 @@ def abort_start(self):
             return
         if self.is_standby:
             return
+        if self.svc.kind == "vol":
+            # volumes are slaves of their consumer svc
+            return
         try:
             for node in self.svc.nodes:
                 if node == Env.nodename: