install mpi-operator and add link to the test

Author: SwarnaBharathiMantena

examples/gke-h4d/README.md

@@ -53,6 +53,9 @@ This blueprint uses GKE to provision a Kubernetes cluster and a H4D node pool, a
 
    Type `a` and hit enter to create the cluster.
 
+## Run a test using the MPI Operator
+The MPI Operator is installed on the cluster during the deployment. To run a test using the MPI Operator on the GKE H4D cluster, refer to https://github.com/GoogleCloudPlatform/kubernetes-engine-samples/tree/main/hpc/mpi.
+
 ## Clean Up
 To destroy all resources associated with creating the GKE cluster, run the following command:
 

examples/gke-h4d/gke-h4d.yaml

@@ -208,3 +208,6 @@ deployment_groups:
         install: true
       jobset:
         install: true
+      apply_manifests:
+      - source: "https://raw.githubusercontent.com/kubeflow/mpi-operator/v0.6.0/deploy/v2beta1/mpi-operator.yaml"
+        server_side_apply: true