Update playbooks to support new netchecker

Netchecker is rewritten in Go lang with some new args instead of
env variables. Also netchecker-server no longer requires kubectl
container. Updating playbooks accordingly.

roles/kubernetes-apps/ansible/templates/netchecker-server-pod.yml

@@ -21,15 +21,8 @@ spec:
       ports:
         - containerPort: 8081
           hostPort: 8081
-    - name: kubectl-proxy
-      image: "{{ kubectl_image }}"
-      imagePullPolicy: {{ k8s_image_pull_policy }}
-      resources:
-        limits:
-          cpu: {{ netchecker_kubectl_cpu_limit }}
-          memory: {{ netchecker_kubectl_memory_limit }}
-        requests:
-          cpu: {{ netchecker_kubectl_cpu_requests }}
-          memory: {{ netchecker_kubectl_memory_requests }}
       args:
-        - proxy
+        - "-v=5"
+        - "-logtostderr"
+        - "-kubeproxyinit"
+        - "-endpoint=0.0.0.0:8081"