updating ChaosMonkeyResource to have application/json content-type

Author: tmack8001

src/main/java/com/netflix/simianarmy/resources/chaos/ChaosMonkeyResource.java

@@ -28,7 +28,9 @@
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.Context;
+import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 import javax.ws.rs.core.UriInfo;
 
@@ -58,6 +60,7 @@
  * The Class ChaosMonkeyResource for json REST apis.
  */
 @Path("/v1/chaos")
+@Produces(MediaType.APPLICATION_JSON)
 @Singleton
 public class ChaosMonkeyResource {