Add Salt 2018.3 tests

Change-Id: I56c33c06d06ce1f4aa9bd147611bb98e900aadd4
diff --git a/tests/pillar/repo_mcp_openstack_pike.sls b/tests/pillar/repo_mcp_openstack_pike.sls
new file mode 100644
index 0000000..789b907
--- /dev/null
+++ b/tests/pillar/repo_mcp_openstack_pike.sls
@@ -0,0 +1,12 @@
+linux:
+  system:
+    enabled: true
+    repo:
+      mirantis_openstack_repo:
+        source: "deb http://mirror.fuel-infra.org/mcp-repos/pike/{{ grains.get('oscodename') }} pike main"
+        architectures: amd64
+        key_url: "http://mirror.fuel-infra.org/mcp-repos/pike/{{ grains.get('oscodename') }}/archive-mcppike.key"
+        pin:
+        - pin: 'release a=pike'
+          priority: 1050
+          package: '*'
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