removes the prepending - for the optional params since they should not be there (DataDog#280)

Author: truthbk

templates/agent-conf.d/ntp.yaml.erb

@@ -7,16 +7,16 @@ init_config:
 instances:
   - offset_threshold: <%= @offset_threshold %>
 <% if @host -%>
-  - host: <%= @host %>
+    host: <%= @host %>
 <% end -%>
 <% if @port -%>
-  - port: <%= @port %>
+    port: <%= @port %>
 <% end -%>
 <% if @version -%>
-  - version: <%= @version %>
+    version: <%= @version %>
 <% end -%>
 <% if @timeout -%>
-  - timeout: <%= @timeout %>
+    timeout: <%= @timeout %>
 <% end -%>
     # Optional params:
     #