Comment 4 for bug 1716989

Actually It looks that it is not related to Contrail itself...
The error is somewhere in rabbitmq configuration: mError: 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'