updated docs and task sequence

edge-pgmaster-pgstandby-node-config.yml

diff --git a/edge-pgmaster-pgstandby-node-config.yml b/edge-pgmaster-pgstandby-node-config.yml
index 0743faf..e35d228 100644
--- a/edge-pgmaster-pgstandby-node-config.yml
+++ b/edge-pgmaster-pgstandby-node-config.yml
@@ -4,6 +4,9 @@
   gather_facts: no
   serial: 1
   tags: ['pg', 'pgmaster']
+  vars_files:
+  - ~/.apigee-secure/credentials.yml
+  - ~/.apigee/custom-properties.yml
   roles:
   - { role: apigee-opdk-setup-postgres-config, tags: ['pg-os-pre-req'] }
   - { role: apigee-opdk-setup-postgres-master }
@@ -14,6 +17,9 @@
   gather_facts: no
   serial: 1
   tags: ['pg', 'pgstandby']
+  vars_files:
+  - ~/.apigee-secure/credentials.yml
+  - ~/.apigee/custom-properties.yml
   roles:
   - { role: apigee-opdk-stop-components, component_name: 'apigee-postgresql' }
   - { role: apigee-opdk-setup-postgres-config, tags: ['pg-os-pre-req'], clear_pgdata: True }