yum repo doesn't work on Amazon Linux

[jfacevedo]

uchiwa-chef/recipes/repo.rb

Line 41 in aca9e32

baseurl "#{node['uchiwa']['yum_repo_url']}/#{branch}/$releasever/$basearch/"

When the repo is going to be configured on Amazon Linux AMI, it fails because the $releasever variable is set as "latest" so the repo URL tries to create as "http://repositories.sensuapp.org/yum/latest/..." and latest doesn't exist. In addition, if you try to lock the AMI to a specific version, $releasever changes to the AMI release date. Eg. "2018.02" and that link also doesn't work.