updated variable for consistency with rest of the file

templates/silent-install.conf.j2

diff --git a/templates/silent-install.conf.j2 b/templates/silent-install.conf.j2
index 6492bae..e185fe0 100644
--- a/templates/silent-install.conf.j2
+++ b/templates/silent-install.conf.j2
@@ -66,7 +66,7 @@
 # Monetization has been configured
 PG_USER={{ pg_user }}
 PG_PWD={{ pg_pass }}
-MO_PG_HOST="$PG_MASTER"
+MO_PG_HOST={{ pgmaster_ip }}
 MO_PG_USER={{ pg_user }}
 MO_PG_PASSWD={{ pg_pass }}
 CASS_CLUSTERNAME={{ opdk_cass_clustername }}