Remove machine if ganeti job fails

Set the VM deleted flag when receiving a failure notification for a
Ganeti OP_INSTANCE_REMOVE operation, even if the VM operstate is not
ERROR. The server may not exist in the backend not only because the
creation failed, but also because a remove notification was lost.

snf-cyclades-app/synnefo/logic/backend.py

@@ -94,8 +94,7 @@ def process_op_status(vm, etime, jobid, opcode, status, logmsg):
     # when no instance exists at the Ganeti backend.
     # See ticket #799 for all the details.
     #
-    if (status == 'error' and opcode == 'OP_INSTANCE_REMOVE' and
-        vm.operstate == 'ERROR'):
+    if (status == 'error' and opcode == 'OP_INSTANCE_REMOVE'):
         vm.deleted = True
         vm.nics.all().delete()