update consul ui test

After this PR with https://github.com/johnbellone/consul-cookbook/pull/68 merge in, kitchen is passing across the board.

```
$ kitchen verify -c 16
...
-----> Kitchen is finished. (17m35.36s)
$ kitchen list
Instance             Driver   Provisioner  Last Action
default-ubuntu-1204  Vagrant  ChefZero     Verified
default-ubuntu-1404  Vagrant  ChefZero     Verified
default-centos-65    Vagrant  ChefZero     Verified
default-centos-510   Vagrant  ChefZero     Verified
runit-ubuntu-1204    Vagrant  ChefZero     Verified
runit-ubuntu-1404    Vagrant  ChefZero     Verified
runit-centos-65      Vagrant  ChefZero     Verified
runit-centos-510     Vagrant  ChefZero     Verified
ui-ubuntu-1204       Vagrant  ChefZero     Verified
ui-ubuntu-1404       Vagrant  ChefZero     Verified
ui-centos-65         Vagrant  ChefZero     Verified
ui-centos-510        Vagrant  ChefZero     Verified
cluster-ubuntu-1204  Vagrant  ChefZero     Verified
cluster-ubuntu-1404  Vagrant  ChefZero     Verified
cluster-centos-65    Vagrant  ChefZero     Verified
cluster-centos-510   Vagrant  ChefZero     Verified
```