Change Details

Since there were a bunch of hosts migrated to a new switch, previously working connections no longer work. Example to `cloudgw2002-dev.codfw1dev.wikimediacloud.org`: ```lang=shell-session aborrero@cloudcontrol2004-dev:~ $ ping 208.80.153.189 PING 208.80.153.189 (208.80.153.189) 56(84) bytes of data. ^C --- 208.80.153.189 ping statistics --- 94 packets transmitted, 0 received, 100% packet loss, time 95217ms ``` Among other things, this makes basically all tests on WMCS cookbooks `wmcs.openstack.network.tests` fail for codfw1dev.