Resolve keepalived service restarts on folsom

* backport d0f3c4693c93e6f3abdac80050e439c80d7092d9
* backport 5d19b43fb9a9ed56b2af5ec991173c669088771d
* backport 61ddd814dba236a190eacf362405b46f7a1e293c
* backport bcaef2970bedd4cf9d75aba04119e975adc97ba2
* fix FC045