Bug 1446797

Description of problem:
Racecondition in step3 of the controller deployment resulting in the following error:

Apr 28 22:40:21 overcloud-controller-0.localdomain os-collect-config[2487]: aint::Base[storage_vip-then-haproxy]/Exec[Creating order constraint storage_vip-then-haproxy]/returns: executed successfully\u001b[0m\n\u001b[mNotice: Finished catalog run in 108.96 seconds\u001b[0m\n", "deploy_stderr": "exception: connect failed\n\u001b[1;31mWarning: Scope(Class[Mongodb::Server]): Replset specified, but no replset_members or replset_config provided.\u001b[0m\n\u001b[1;31mWarning: Scope(Haproxy::Config[haproxy]): haproxy: The $merge_options parameter will default to true in the next major release. Please review the documentation regarding the implications.\u001b[0m\n\u001b[1;31mError: Could not prefetch mysql_user provider 'mysql': Execution of '/usr/bin/mysql -NBe SELECT CONCAT(User, '@',Host) AS User FROM mysql.user' returned 1: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)\u001b[0m\n", "deploy_status_code": 0}


Version-Release number of selected component (if applicable):


How reproducible:
Seldom

Steps to Reproduce:
1. Deploy an onvercloud on a KVM host with 16GB of ram with 3 ceph, 3 controller and one compute
2.
3.

Actual results:
FAILED at step 3

Expected results:
Succeeds

Additional info:
It's intermittent