add robustness after testing site.yml

roles/keystone/tasks/main.yml

@@ -27,6 +27,13 @@
 
 - name: Initialize db
   script: scripts/initialize_db.sh {{ hostvars[groups['databases'][0]]['ansible_default_ipv4']['address'] }}
+  register: result
+  until: result|succeeded
+  # sometimes the initial connect fails.
+  # Retry until it succeeds.
+  retries: 7
+  delay: 3
+  ignore_errors: yes
 
 - name: keystone manage commands to setup db
   command: >