Integrate the litmus images with scarf gateway (#620)

Signed-off-by: Shubham Chaudhary <shubham.chaudhary@harness.io>

faults/kubernetes/node-io-stress/fault.yaml

@@ -56,7 +56,7 @@ spec:
       - apiGroups: [""]
         resources: ["nodes"]
         verbs: ["get", "list"]
-    image: "litmuschaos/go-runner:latest"
+    image: "litmuschaos.docker.scarf.sh/litmuschaos/go-runner:latest"
     imagePullPolicy: Always
     args:
       - -c
@@ -102,7 +102,7 @@ spec:
 
       # provide lib image
       - name: LIB_IMAGE
-        value: "litmuschaos/go-runner:latest"
+        value: "litmuschaos.docker.scarf.sh/litmuschaos/go-runner:latest"
 
       ## percentage of total nodes to target
       - name: NODES_AFFECTED_PERC