Updated mirror config

tasks/main.yml

diff --git a/tasks/main.yml b/tasks/main.yml
index f1fa13c..0dae479 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -28,6 +28,7 @@
     regexp: "({{ item.attribute }}).*"
     line: '{{ item.attribute }}{{ item.value }}'
   with_items:
-  - { attribute: 'export MIRROR_USERNAME=', value: '{{ apigee_repo_user }}' }
-  - { attribute: 'export MIRROR_PASSWORD=', value: '{{ apigee_repo_password }}'}
+  - { attribute: 'export MIRROR_USERNAME=', value: '{{ apigee_repo_user | default(default_apigee_repo_user) }}' }
+  - { attribute: 'export MIRROR_PASSWORD=', value: '{{ apigee_repo_pass | default(default_apigee_repo_pass) }}' }
 
+:
\ No newline at end of file