Add a prometheus exporter

Change-Id: I2989d87c2a83eed31c6617694bdcb78bf9b38553
diff --git a/apps/openstacktelemetry/app/BUCK b/apps/openstacktelemetry/app/BUCK
index 4cc3d98..0d8faa4 100644
--- a/apps/openstacktelemetry/app/BUCK
+++ b/apps/openstacktelemetry/app/BUCK
@@ -15,6 +15,18 @@
     '//apps/openstacktelemetry/api:onos-apps-openstacktelemetry-api',
     '//lib:kafka-clients',
     '//lib:influxdb-java',
+    '//lib:simpleclient',
+    '//lib:simpleclient_common',
+    '//lib:simpleclient_hotspot',
+    '//lib:simpleclient_servlet',
+    '//lib:jetty-http',
+    '//lib:jetty-servlet',
+    '//lib:jetty-server',
+    '//lib:jetty-security',
+    '//lib:jetty-websocket',
+    '//lib:jetty-util',
+    '//lib:jetty-io',
+    '//lib:servlet-api',
     '//lib:protobuf-java-3.2.0',
     '//lib:GRPC_1.3',
     '//incubator/grpc-dependencies:grpc-core-repkg-' + GRPC_VER,