title: Yum fails with - There are no enabled repos
body: <p>I was trying to install yum on my redhat 7, to install the required packages I used
  The error message is 
   'There are no enabled repos.
    Run "yum repolist all" to see the repos you have.
    You can enable repos with yum-config-manager --enable '
  How can I fix this??</p>