Use server.dir.config_in_container for ssl dir

Remove prometheus.server.target.etcd

Change-Id: I6aff1e6413eff860f3d5f22a772a0182fbaf659e
Depends-On: I7ab68a64f6730fd5a28db28c1e63f7e2cce95473
diff --git a/prometheus/server/init.yml b/prometheus/server/init.yml
index 0ecea17..2c241bd 100644
--- a/prometheus/server/init.yml
+++ b/prometheus/server/init.yml
@@ -2,3 +2,7 @@
   _param:
     prometheus_server_config_directory: /srv/prometheus
     prometheus_server_data_directory: /data
+  prometheus:
+    server:
+      dir:
+        config_in_container: ${_param:prometheus_server_config_directory}