CSI-5757: fix topology secret yaml sample

Author: kasserater

deploy/kubernetes/examples/demo-secret-config.json

@@ -1,24 +1,32 @@
-{
-  "demo-management-id-1": {
-    "username": "demo-username-1",
-    "password": "demo-password-1",
-    "management_address": "demo-management-address-1",
-    "supported_topologies": [
-      {
-        "topology.block.csi.ibm.com/demo-region": "demo-region-1",
-        "topology.block.csi.ibm.com/demo-zone": "demo-zone-1"
+kind: Secret
+apiVersion: v1
+metadata:
+  name: demo-secret
+  namespace: default
+type: Opaque
+stringData:
+  management_address: |
+    {
+      "demo-management-id-1": {
+        "username": "demo-username-1",
+        "password": "demo-password-1",
+        "management_address": "demo-management-address-1",
+        "supported_topologies": [
+          {
+            "topology.block.csi.ibm.com/demo-region": "demo-region-1",
+            "topology.block.csi.ibm.com/demo-zone": "demo-zone-1"
+          }
+        ]
+      },
+      "demo-management-id-2": {
+        "username": "demo-username-2",
+        "password": "demo-password-2",
+        "management_address": "demo-management-address-2",
+        "supported_topologies": [
+          {
+            "topology.block.csi.ibm.com/demo-region": "demo-region-2",
+            "topology.block.csi.ibm.com/demo-zone": "demo-zone-2"
+          }
+        ]
       }
-    ]
-  },
-  "demo-management-id-2": {
-    "username": "demo-username-2",
-    "password": "demo-password-2",
-    "management_address": "demo-management-address-2",
-    "supported_topologies": [
-      {
-        "topology.block.csi.ibm.com/demo-region": "demo-region-2",
-        "topology.block.csi.ibm.com/demo-zone": "demo-zone-2"
-      }
-    ]
-  }
-}
+    }