Updating master README.md for Install individual components (#2873)

Signed-off-by: N, Park <nparkstar@gmail.com>
Co-authored-by: N, Park <npark@starcell.co.kr>

README.md

@@ -187,6 +187,7 @@ Install cert-manager:
 
 ```sh
 kustomize build common/cert-manager/cert-manager/base | kubectl apply -f -
+kustomize build common/cert-manager/kubeflow-issuer/base | kubectl apply -f -
 echo "Waiting for cert-manager to be ready ..."
 kubectl wait --for=condition=ready pod -l 'app in (cert-manager,webhook)' --timeout=180s -n cert-manager
 kubectl wait --for=jsonpath='{.subsets[0].addresses[0].targetRef.kind}'=Pod endpoints -l 'app in (cert-manager,webhook)' --timeout=180s -n cert-manager
@@ -209,7 +210,6 @@ Install Istio:
 
 ```sh
 echo "Installing Istio configured with external authorization..."
-cd common/istio-1-22
 kustomize build common/istio-1-22/istio-crds/base | kubectl apply -f -
 kustomize build common/istio-1-22/istio-namespace/base | kubectl apply -f -
 kustomize build common/istio-1-22/istio-install/overlays/oauth2-proxy | kubectl apply -f -
@@ -268,6 +268,13 @@ Install kubeflow namespace:
 kustomize build common/kubeflow-namespace/base | kubectl apply -f -
 ```
 
+#### Network Policies
+
+Install network policies:
+```sh
+kustomize build common/networkpolicies/base | kubectl apply -f -
+```
+
 #### Kubeflow Roles
 
 Create the Kubeflow ClusterRoles, `kubeflow-view`, `kubeflow-edit` and
@@ -280,6 +287,17 @@ Install kubeflow roles:
 kustomize build common/kubeflow-roles/base | kubectl apply -f -
 ```
 
+#### Kubeflow Istio Resources
+
+Create the Kubeflow Gateway, `kubeflow-gateway` and ClusterRole, 
+`kubeflow-istio-admin`.
+
+Install kubeflow istio resources:
+
+```sh
+kustomize build common/istio-1-22/kubeflow-istio-resources/base | kubectl apply -f -
+```
+
 #### Kubeflow Pipelines
 
 Install the [Multi-User Kubeflow Pipelines](https://www.kubeflow.org/docs/components/pipelines/multi-user/) official Kubeflow component:
@@ -338,7 +356,7 @@ kustomize build apps/katib/upstream/installs/katib-with-kubeflow | kubectl apply
 Install the Central Dashboard official Kubeflow component:
 
 ```sh
-kustomize build apps/centraldashboard/upstream/overlays/kserve | kubectl apply -f -
+kustomize build apps/centraldashboard/upstream/overlays/oauth2-proxy | kubectl apply -f -
 ```
 
 #### Admission Webhook