Add label to namespaces

This patch set adds the ability to add a label to the following namespaces:

- kube-public
- kube-system
- default

This was previously done in kubeadm in patch [0] but appears to be
removed as the script moved around. Also, this PS adds this to the
minikube deployment.

[0] https://review.opendev.org/#/c/540131/

Change-Id: I0f06e8ae0cd7742313b447dc2d563c7d92318fb0
Signed-off-by: Tin Lam <tin@irrational.io>

roles/deploy-kubeadm-aio-common/tasks/util-kubeadm-aio-run.yaml

@@ -74,3 +74,10 @@
       docker_container:
         name: "kubeadm-{{ kubeadm_aio_action }}"
         state: absent
+    - name: add labels to namespaces
+      command: kubectl label --overwrite namespace {{ item }} name={{ item }}
+      with_items:
+        - default
+        - kube-system
+        - kube-public
+      ignore_errors: True

tools/deployment/common/005-deploy-k8s.sh

@@ -235,3 +235,8 @@ kubectl label nodes --all ceph-osd=enabled
 kubectl label nodes --all ceph-mds=enabled
 kubectl label nodes --all ceph-rgw=enabled
 kubectl label nodes --all ceph-mgr=enabled
+
+# Add labels to the core namespaces
+kubectl label --overwrite namespace default name=default
+kubectl label --overwrite namespace kube-system name=kube-system
+kubectl label --overwrite namespace kube-public name=kube-public