keepalived: use sh instead of bash for notifier scripts

Those scripts are pretty trivial, calling external commands and using
kill -s and $(...) construction. All that is available in POSIX shell,
so let's not use bash in shebang and utilize more performant shell in
case /bin/sh != /bin/bash (valid for Debian based systems).

Change-Id: Ib5264c5ef51ca9028d7c27d440104a5ab978a557

diff --git a/neutron/agent/linux/keepalived.py b/neutron/agent/linux/keepalived.py
index 19f46c8dc1eaaaf9c3e0528b242a098c14c11042..ef6c9f77e3dd61aa19d41d6454b8f4a7fd0248be 100644 (file)
--- a/neutron/agent/linux/keepalived.py
+++ b/neutron/agent/linux/keepalived.py
@@ -311,7 +311,7 @@ class KeepalivedNotifierMixin(object):
         return name
 
     def _prepend_shebang(self, script):
-        return '#!/usr/bin/env bash\n%s' % script
+        return '#!/bin/sh\n%s' % script
 
     def _append_state(self, script, state):
         state_path = self._get_full_config_file_path('state')