Add configuration for publishing cc-worker metrics

jobs/cloud_controller_worker/spec

@@ -425,6 +425,18 @@ properties:
     description: "The number of seconds to wait for each generic cloud_controller_worker worker process to finish processing jobs before forcefully shutting it down"
     default: 15
 
+  cc.publish_metrics:
+    default: false
+    description: "When set to true a small webserver will be started in a seperate thread within the first worker's process.
+                  This webserver will publish prometheus metrics of the workers under '/metrics'. The webserver will listen on the port
+                  defined in 'cc.prometheus_port'."
+  cc.prometheus_port:
+    default: 9394
+    description: "When 'cc.publish_metrics' is set to true, the webserver, which publishes the metrics, will listen on this port."
+
+  cc.directories.tmpdir:
+    default: "/var/vcap/data/cloud_controller_worker/tmp"
+    description: "The directory to use for temporary files"
 
   uaa.clients.cc-service-dashboards.secret:
     description: "Used for generating SSO clients for service brokers."

jobs/cloud_controller_worker/templates/cloud_controller_ng.yml.erb

@@ -356,3 +356,9 @@ cpu_weight_max_memory: <%= link("cloud_controller_internal").p("cc.cpu_weight_ma
 max_manifest_service_binding_poll_duration_in_seconds: <%= p("cc.max_manifest_service_binding_poll_duration_in_seconds") %>
 
 app_log_revision: <%= link("cloud_controller_internal").p("cc.app_log_revision") %>
+
+publish_metrics: <%= p("cc.publish_metrics") %>
+prometheus_port: <%= p("cc.prometheus_port") %>
+
+directories:
+  tmpdir: <%= p("cc.directories.tmpdir") %>