bb1fd16c75
This patch ensures that the localhost line in /etc/hosts is configured properly prior to installing and configuring RabbitMQ. Without this patch, the RabbitMQ installation often fails on CentOS 7 since RabbitMQ can't figure out its hostname. The fix in I6368b6584265084af6ff98caba68fc067b1f1f22 is reverted here because it had no effect on the /etc/hosts file. Change-Id: Ie65e5b7bcbaa1890824a93263c64e6fd04702852