Disable EPEL repo in kitchen CI

The EPEL repo referencing download.fedoraproject.org is frequently
timing out on yum install operations.
Disable the EPEL and puppetlabs repo with kitchen during CI builds.

.kitchen.yml

@@ -55,6 +55,7 @@ platforms:
         - sed -ri 's/^#?PermitRootLogin .*/PermitRootLogin yes/' /etc/ssh/sshd_config
         - sed -ri 's/^#?PasswordAuthentication .*/PasswordAuthentication yes/' /etc/ssh/sshd_config
         - sed -ri 's/^#?UsePAM .*/UsePAM no/' /etc/ssh/sshd_config
+        - rm /etc/yum.repos.d/epel*repo /etc/yum.repos.d/puppetlabs-pc1.repo
         - yum -y install initscripts
         - yum clean all
       run_command: "/usr/sbin/init"