updated upgrade scripts.

templates/devportal-silent-install.conf.j2

diff --git a/templates/devportal-silent-install.conf.j2 b/templates/devportal-silent-install.conf.j2
index 852b0d8..3126a6f 100644
--- a/templates/devportal-silent-install.conf.j2
+++ b/templates/devportal-silent-install.conf.j2
@@ -1,7 +1,7 @@
 HOSTIP=$(hostname -i)
 PG_NAME=devportal
 PG_USER={{ dp_pg_user }}
-PG_PWD='{{ dp_pg_pass }}'
+PG_PWD='{{ dp_pg_pass | default(pg_pass) }}'
 
 PG_HOST={{ dp_pg_ip }}
 DEFAULT_DB=postgres