make loggregator config optional -- sometimes we only want fluent

[#172415438]

Authored-by: Connor Braa <cbraa@pivotal.io>

Author: cwlbraa

lib/cloud_controller/config_schemas/api_schema.rb

@@ -217,7 +217,7 @@ class ApiSchema < VCAP::Config
             subject_name: String
           },
 
-          loggregator: {
+          optional(:loggregator) => {
             router: String,
             internal_url: String,
           },

lib/cloud_controller/config_schemas/clock_schema.rb

@@ -117,10 +117,15 @@ class ClockSchema < VCAP::Config
           optional(:uaa_client_secret) => String,
           optional(:uaa_client_scope) => String,
 
-          loggregator: {
+          optional(:loggregator) => {
             router: String,
           },
 
+          optional(:fluent) => {
+            optional(:host) => String,
+            optional(:port) => Integer,
+          },
+
           skip_cert_verify: bool,
 
           optional(:routing_api) => {

lib/cloud_controller/config_schemas/worker_schema.rb

@@ -121,10 +121,15 @@ class WorkerSchema < VCAP::Config
             interpolate_service_bindings: bool
           },
 
-          loggregator: {
+          optional(:loggregator) => {
             router: String,
           },
 
+          optional(:fluent) => {
+            optional(:host) => String,
+            optional(:port) => Integer,
+          },
+
           skip_cert_verify: bool,
 
           optional(:routing_api) => {