Add Salt 2018.3 tests

Change-Id: I936a5707dca965473446ce05da2f1872f9f6c443
diff --git a/.travis.yml b/.travis.yml
index c681010..03c1a7e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,21 +20,32 @@
   - bundle install
 
 env:
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=mitaka SUITE=compute-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=mitaka SUITE=compute-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=newton SUITE=compute-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=newton SUITE=compute-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=newton SUITE=control-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=ocata SUITE=compute-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=ocata SUITE=control-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=ocata SUITE=compute-cluster
-  - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=ocata SUITE=control-cluster
-  # - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=mitaka SUITE=compute-cluster
-  # - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=mitaka SUITE=control-cluster
-  # - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=newton SUITE=compute-cluster
-  # - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=newton SUITE=control-cluster
-  # - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=ocata SUITE=compute-cluster
-  # - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=ocata SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=mitaka SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=mitaka SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=newton SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=newton SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=ocata SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2016.3 OS_VERSION=ocata SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=mitaka SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=mitaka SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=newton SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=newton SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=ocata SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2017.7 OS_VERSION=ocata SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2018.3 OS_VERSION=ocata SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2018.3 OS_VERSION=ocata SUITE=control-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2018.3 OS_VERSION=pike SUITE=compute-cluster
+  - PLATFORM=epcim/salt:saltstack-ubuntu-xenial-salt-2018.3 OS_VERSION=pike SUITE=control-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=mitaka SUITE=compute-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=mitaka SUITE=control-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=newton SUITE=compute-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=newton SUITE=control-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=ocata SUITE=compute-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2017.7 OS_VERSION=ocata SUITE=control-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2018.3 OS_VERSION=ocata SUITE=compute-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2018.3 OS_VERSION=ocata SUITE=control-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2018.3 OS_VERSION=pike SUITE=compute-cluster
+  # - PLATFORM=epcim/salt:saltstack-ubuntu-bionic-salt-2018.3 OS_VERSION=pike SUITE=control-cluster
 
 before_script:
   - set -o pipefail