Added bind info for pushgateway

Change-Id: Ib3b8e0ef15a864208e29df4b553fbde42882dc7c
diff --git a/metadata/service/pushgateway/container.yml b/metadata/service/pushgateway/container.yml
index 28c24e6..c667eb1 100644
--- a/metadata/service/pushgateway/container.yml
+++ b/metadata/service/pushgateway/container.yml
@@ -4,3 +4,6 @@
   prometheus:
     pushgateway:
       enabled: true
+      bind:
+        address: 0.0.0.0
+        port: 9091