v0.8.1

• New #147: Add ability to install custom rabbitmq_plugins in rabbitmq role (@cognifloyd)
• Enh #160: Option to choose MongoDB and Node.js versions during install, minor enhancements
• Enh #167: Hide some secrets appeared in Ansible debug output via no_log (@cognifloyd)
• Bug #167: Fix warnings caused by template indicators {{ }} in when conditional (@cognifloyd)
• Bug #168: Fix restart st2chatops service on package install/upgrade