[Doc] kubectl is not 'update' but 'apply'

[Yushiro FURUKAWA]

In the latest deployment-guide for kolla-k8s[1], following command is wrong:

$ kubectl update -f <(cat <<EOF
apiVersion: rbac.authorization.k8s.io/v1alpha1
kind: ClusterRoleBinding
metadata:
  name: cluster-admin
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: Group
  name: system:masters
- kind: Group
  name: system:authenticated
- kind: Group
  name: system:unauthenticated
EOF
)

Error: unknown command "update" for "kubectl"
Run 'kubectl --help' for usage.

Regarding help message, it should be 'apply' instead of 'update'.

$ kubectl version
Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.5", GitCommit:"cce11c6a185279d037023e02ac5249e14daa22bf", GitTreeState:"clean", BuildDate:"2017-12-07T16:16:03Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.5", GitCommit:"cce11c6a185279d037023e02ac5249e14daa22bf", GitTreeState:"clean", BuildDate:"2017-12-07T16:05:18Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}

$ $ kubectl help | grep apply
  apply Apply a configuration to a resource by filename or stdin

$ kubectl apply -f <(cat <<EOF
apiVersion: rbac.authorization.k8s.io/v1alpha1
kind: ClusterRoleBinding
metadata:
name: cluster-admin
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: Group
name: system:masters
- kind: Group
name: system:authenticated
- kind: Group
name: system:unauthenticated
EOF
)
error: error validating "/dev/fd/63": error validating data:
unknown object type schema.GroupVersionKind{Group:"rbac.authorization.k8s.io", Version:"v1alpha1", Kind:"ClusterRoleBinding"};
if you choose to ignore these errors, turn validation off with --validate=false

$ kubectl apply -f <(cat <<EOF
apiVersion: rbac.authorization.k8s.io/v1alpha1
kind: ClusterRoleBinding
metadata:
name: cluster-admin
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: Group
name: system:masters
- kind: Group
name: system:authenticated
- kind: Group
name: system:unauthenticated
EOF
) --validate=false
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
clusterrolebinding "cluster-admin" configured

Therefore, 'update' should be changed into 'apply' and necessary to add '--validate=false'

[1] https://docs.openstack.org/kolla-kubernetes/latest/deployment-guide.html#step-3-deploying-kolla-kubernetes

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/526919

[OpenStack Infra (hudson-openstack)]

Change abandoned by Yushiro FURUKAWA (<email address hidden>) on branch: master
Review: https://review.openstack.org/526919
Reason: move to https://review.openstack.org/#/c/524125/