added an additional delete that becomes necessary during certain re-runs of the installation.

installations/dc1/components/opdk-setup-postgres-common.yml

diff --git a/installations/dc1/components/opdk-setup-postgres-common.yml b/installations/dc1/components/opdk-setup-postgres-common.yml
index 2c6e586..f00638b 100644
--- a/installations/dc1/components/opdk-setup-postgres-common.yml
+++ b/installations/dc1/components/opdk-setup-postgres-common.yml
@@ -7,6 +7,17 @@
   - apigee-opdk-setup-os-postgres
   - apigee-opdk-setup-postgres-config
 
+- hosts: '{{ hosts }}'
+  roles:
+  - apigee-opdk-setup-default-settings
+  tasks:
+  - name: Remove pgdata from pgstandby server
+    become: true
+    file:
+      path: '{{ apigee_installation_home }}/data/apigee-postgresql/pgdata'
+      state: absent
+    when: pg_component is defined and pg_component == 'standby'
+
 - include: opdk-install-component.yml
   vars:
     hosts: '{{ hosts }}'