Add an example that uses a generic ephemeral volume

Longhorn 8198

Signed-off-by: Eric Weber <eric.weber@suse.com>
(cherry picked from commit c557f1d)

examples/pod_with_gev.yaml

@@ -0,0 +1,34 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: volume-test
+  namespace: default
+spec:
+  restartPolicy: Always
+  containers:
+  - name: volume-test
+    image: nginx:stable-alpine
+    imagePullPolicy: IfNotPresent
+    livenessProbe:
+      exec:
+        command:
+          - ls
+          - /data/lost+found
+      initialDelaySeconds: 5
+      periodSeconds: 5
+    volumeMounts:
+    - name: volv
+      mountPath: /data
+    ports:
+    - containerPort: 80
+  volumes:
+  - name: volv
+    ephemeral:
+      volumeClaimTemplate:
+        spec:
+          accessModes:
+            - ReadWriteOnce
+          storageClassName: longhorn
+          resources:
+            requests:
+              storage: 2Gi