Add unit tests

Change-Id: I76d0e10ea31e222a743e9d11bcf7a53453ff2054
diff --git a/tests/pillar/cluster_slave.sls b/tests/pillar/cluster_slave.sls
new file mode 100644
index 0000000..95bdba7
--- /dev/null
+++ b/tests/pillar/cluster_slave.sls
@@ -0,0 +1,15 @@
+redis:
+  cluster:
+    enabled: True
+    master:
+      host: 192.168.1.100
+      port: 6379
+    mode: sentinel
+    quorum: 2
+    role: slave
+supervisor:
+  server:
+    service:
+      redis_sentinel:
+        name: sentinel
+        type: redis
\ No newline at end of file