added vars_files

installations/dc2/configuration/update_cache.yml

diff --git a/installations/dc2/configuration/update_cache.yml b/installations/dc2/configuration/update_cache.yml
index 6404ede..2a3b521 100644
--- a/installations/dc2/configuration/update_cache.yml
+++ b/installations/dc2/configuration/update_cache.yml
@@ -1,8 +1,10 @@
 ---
 - hosts: planet
-
+  vars_files:
+  - ~/.apigee/credentials.yml
   pre_tasks:
   - setup:
+
   - ec2_facts:
     when: "{{ ansible_bios_version | lower | search('amazon') }}"