Merge branch 'enable-powertools-cr' into 'master'

Enable CR and PowerTools yum repos

See merge request !3

setup/ibox.sh

-sed -i 's/^enabled=.*/enabled=1/' /etc/yum.repos.d/CentOS-PowerTools.repo /etc/yum.repos.d/CentOS-CR.repo
+sed -i 's/^enabled=.*/enabled=1/' /etc/yum.repos.d/CentOS-Linux-PowerTools.repo /etc/yum.repos.d/CentOS-Linux-ContinousRelease.repo
 
 cat <<-EOF > /etc/pki/rpm-gpg/RPM-GPG-KEY-puppet
 -----BEGIN PGP PUBLIC KEY BLOCK-----