install-kubernetes: fix minikube config permission

It seems like new minikube changed the default minikube config
permission. This change ensures the minikube config is owned by
the ansible_user

Change-Id: Ic1af1541fb1f32253678f989d7b62d21074514d5

roles/install-kubernetes/tasks/minikube.yaml

@@ -44,5 +44,11 @@
     MINIKUBE_HOME: "{{ ansible_user_dir }}"
     KUBECONFIG: "{{ ansible_user_dir }}/.kube/config"
 
+- name: Ensure minikube config is owned by ansible_user
+  become: yes
+  file:
+    path: "{{ ansible_user_dir }}/.minikube/client.key"
+    owner: "{{ ansible_user }}"
+
 - name: Get cluster info
   command: kubectl cluster-info