CORD-984 Retry adding PPAs

Change-Id: I90b0a637875a34df5301528e22cd092877d9e8c0
diff --git a/roles/ansible/tasks/main.yml b/roles/ansible/tasks/main.yml
index 10a5293..cd98dac 100644
--- a/roles/ansible/tasks/main.yml
+++ b/roles/ansible/tasks/main.yml
@@ -2,6 +2,10 @@
   become: yes
   apt_repository:
     repo: "{{ ansible_apt_repo | default('ppa:ansible/ansible') }}"
+  register: result
+  until: result | success
+  retries: 3
+  delay: 10
 
 - name: Ensure Ansible
   become: yes