Swss fails to start after device reboot due to raise condition.

[oleksandrivantsiv]

root@arc-switch1027:/home/admin# systemctl status swss
● swss.service - switch state service container
   Loaded: loaded (/etc/systemd/system/swss.service; enabled)
   Active: failed (Result: exit-code) since Wed 2017-02-01 09:37:21 UTC; 14min ago
  Process: 1090 ExecStartPre=/usr/bin/docker exec database redis-cli -n 0 FLUSHDB (code=exited, status=1/FAILURE)

Feb 01 09:37:21 arc-switch1027 docker[1090]: Could not connect to Redis at 127.0.0.1:6379: Connection refused
Feb 01 09:37:21 arc-switch1027 docker[1090]: Could not connect to Redis at 127.0.0.1:6379: Connection refused
Feb 01 09:37:21 arc-switch1027 systemd[1]: swss.service: control process exited, code=exited status=1
Feb 01 09:37:21 arc-switch1027 systemd[1]: Failed to start switch state service container.
Feb 01 09:37:21 arc-switch1027 systemd[1]: Unit swss.service entered failed state.

[lguohan]

addressed in sonic-net/sonic-buildimage#248