updated to include setup os for postgres.

requirements.yml

diff --git a/requirements.yml b/requirements.yml
index 760d987..80a28dd 100644
--- a/requirements.yml
+++ b/requirements.yml
@@ -68,4 +68,7 @@
 - src: https://github.com/carlosfrias/apigee-opdk-setup-postgres-standby
   name: opdk-setup-postgres-standby
 
+- src: https://github.com/carlosfrias/apigee-opdk-setup-os-postgres
+  name: opdk-setup-os-postgres
+