worked to resolve collision between these roles.

defaults/main.yml

diff --git a/defaults/main.yml b/defaults/main.yml
index 542a78c..0dd99c3 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -8,7 +8,7 @@
 opdk_version: '4.17.09'
 
 # Apigee staging installation folder
-#opdk_installer_path: "/tmp/edge"
+opdk_installer_path: "/tmp/edge"
 
 # Default name of the backup archive of the apigee data folder
 apigee_data_backup_archive_name: apigee_data_backup.tar.gz

tasks/cache.yml

diff --git a/tasks/cache.yml b/tasks/cache.yml
index 6e146c1..2d4a17a 100644
--- a/tasks/cache.yml
+++ b/tasks/cache.yml
@@ -72,7 +72,7 @@
   - { key: 'opdk_bind_on_all_interfaces', value: '{{ opdk_bind_on_all_interfaces }}' }
   - { key: 'opdk_smtp_mail_from', value: '{{ opdk_smtp_mail_from }}' }
   - { key: 'enable_system_check', value: '{{ enable_system_check }}' }
-  - { key: 'opdk_installer_path', value: '/tmp/edge' }
-  - { key: 'opdk_installation_config_file', value: '/tmp/edge/edge-response-{{ opdk_version }}-{{ region }}.conf' }
-  - { key: 'opdk_portal_config_file', value: '/tmp/edge/edge-devportal-response-{{ opdk_version }}.conf' }
-  - { key: 'opdk_portal_db_config_file', value: '/tmp/edge/edge-devportal-postgres-response.conf' }
+  - { key: 'opdk_installer_path', value: '{{ opdk_installer_path }}' }
+  - { key: 'opdk_installation_config_file', value: '{{ opdk_installer_path }}/edge-response-{{ opdk_version }}-{{ region }}.conf' }
+  - { key: 'opdk_portal_config_file', value: '{{ opdk_installer_path }}/edge-devportal-response-{{ opdk_version }}.conf' }
+  - { key: 'opdk_portal_db_config_file', value: '{{ opdk_installer_path }}/edge-devportal-postgres-response.conf' }