install-kubernetes: fix missing package, fix the client.key file path

The install-kubernetes role is now failing due to the fact that
minikube now requires conntrack.  This patch solves this.

Change-Id: I1e59d5e9255064646bd8e8c6b6edb2c34d45b516

roles/install-kubernetes/tasks/main.yaml

@@ -14,6 +14,7 @@
   become: yes
   apt:
     name:
+      - conntrack
       - kubectl
       - liblz4-tool
     update_cache: yes

roles/install-kubernetes/tasks/minikube.yaml

@@ -64,10 +64,21 @@
     MINIKUBE_HOME: "{{ ansible_user_dir }}"
     KUBECONFIG: "{{ ansible_user_dir }}/.kube/config"
 
+- name: Get KUBECONFIG
+  command: "kubectl config view"
+  register: kubeconfig_yaml
+
+- name: Parse KUBECONFIG YAML
+  set_fact:
+    kube_config: "{{ kubeconfig_yaml.stdout | from_yaml }}"
+
 - name: Ensure minikube config is owned by ansible_user
   become: yes
+  loop: "{{ kube_config['users'] }}"
+  loop_control:
+    loop_var: item
   file:
-    path: "{{ ansible_user_dir }}/.minikube/client.key"
+    path: "{{ item['user']['client-key'] }}"
     owner: "{{ ansible_user }}"
 
 - name: Get cluster info