Drop Travis CI support

Fixes: PROD-25037 (PROD:25037)

Change-Id: I58dc1e7916e1f562030a2d795965818caf4dc1f3
diff --git a/.kitchen.yml b/.kitchen.yml
index 33598ba..c19dffd 100644
--- a/.kitchen.yml
+++ b/.kitchen.yml
@@ -27,17 +27,31 @@
   dependencies:
     - name: linux
       repo: git
-      source: "https://github.com/salt-formulas/salt-formula-linux"
+      source: "https://gerrit.mcp.mirantis.com/salt-formulas/linux"
 
 verifier:
   name: inspec
   sudo: true
 
+docker_images:
+  - &xenial-20163 <%=ENV['IMAGE_XENIAL_20163'] || 'docker-dev-local.docker.mirantis.net/epcim/salt/saltstack-ubuntu-xenial-salt-2016.3/salt:2018_11_19'%>
+  - &xenial-20177 <%=ENV['IMAGE_XENIAL_20177'] || 'docker-dev-local.docker.mirantis.net/epcim/salt/saltstack-ubuntu-xenial-salt-2017.7/salt:2018_11_19'%>
+  - &xenial-stable <%=ENV['IMAGE_XENIAL_STABLE'] || 'docker-dev-local.docker.mirantis.net/epcim/salt/saltstack-ubuntu-xenial-salt-stable/salt:2018_11_19'%>
 
 platforms:
-  - name: <%=ENV['PLATFORM'] ||  'saltstack-ubuntu-xenial-salt-stable' %>
+  - name: xenial-2016.3
     driver_config:
-      image: <%=ENV['PLATFORM'] || 'docker-dev-local.docker.mirantis.net/epcim/salt/saltstack-ubuntu-xenial-salt-stable/salt:2018_11_19'%>
+      image: *xenial-20163
+      platform: ubuntu
+
+  - name: xenial-2017.7
+    driver_config:
+      image: *xenial-20177
+      platform: ubuntu
+
+  - name: xenial-stable
+    driver_config:
+      image: *xenial-stable
       platform: ubuntu
 
 suites:
@@ -51,5 +65,4 @@
       pillars-from-files:
         openssh.sls: tests/pillar/server.sls
 
-
 # vim: ft=yaml sw=2 ts=2 sts=2 tw=125