Make netchecker log levels configurable (#11334)

* Make netchecker log levels configurable

* use ETCD_LOG_LEVEL

roles/kubernetes-apps/ansible/templates/netchecker-server-deployment.yml.j2

@@ -43,7 +43,7 @@ spec:
           ports:
             - containerPort: 8081
           args:
-            - -v=5
+            - -v={{ netchecker_server_log_level }}
             - -logtostderr
             - -kubeproxyinit=false
             - -endpoint=0.0.0.0:8081
@@ -51,6 +51,9 @@ spec:
         - name: etcd
           image: "{{ etcd_image_repo }}:{{ netcheck_etcd_image_tag }}"
           imagePullPolicy: {{ k8s_image_pull_policy }}
+          env:
+            - name: ETCD_LOG_LEVEL
+              value: "{{ netchecker_etcd_log_level }}"
           command:
             - etcd
             - --listen-client-urls=http://127.0.0.1:2379