Added Galera example to kubernetes. (post review)

examples/mysql-galera/pxc-node1.yaml

@@ -0,0 +1,58 @@
+apiVersion: v1
+kind: Service
+id: pxc-node1
+metadata:
+  name: pxc-node1
+spec:
+  ports:
+    - port: 3306
+      name: mysql
+    - port: 4444
+      name: state-snapshot-transfer
+    - port: 4567
+      name: replication-traffic 
+    - port: 4568
+      name: incremental-state-transfer 
+  selector:
+    node: pxc-node1 
+labels: 
+  node: pxc-node1
+---
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: pxc-node1 
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        node: pxc-node1 
+        unit: pxc-cluster
+    spec:
+      containers:
+        - resources:
+            limits: 
+              cpu: 0.3
+          image: capttofu/percona_xtradb_cluster_5_6:beta
+          name: pxc-node1
+          ports:
+            - containerPort: 3306
+            - containerPort: 4444
+            - containerPort: 4567
+            - containerPort: 4568
+          env:
+            - name: GALERA_CLUSTER
+              value: "true"
+            - name: WSREP_CLUSTER_ADDRESS
+              value: gcomm://
+            - name: WSREP_SST_USER
+              value: sst
+            - name: WSREP_SST_PASSWORD
+              value: sst
+            - name: MYSQL_USER
+              value: mysql
+            - name: MYSQL_PASSWORD
+              value: mysql
+            - name: MYSQL_ROOT_PASSWORD
+              value: c-krit