Add static targets and 'enabled' param for targets

Change-Id: I73c53296c07fb6626767ac468889d84eaa66f877
diff --git a/prometheus/server/target/kubernetes.yml b/prometheus/server/target/kubernetes.yml
index 8abed5d..d7ba3d6 100644
--- a/prometheus/server/target/kubernetes.yml
+++ b/prometheus/server/target/kubernetes.yml
@@ -3,6 +3,7 @@
     server:
       target:
         kubernetes:
+          enabled: true
           api_ip: ${_param:kubernetes_control_address}
           ssl_dir: /opt/prometheus/config
           cert_name: prometheus-server.crt