Add a repo with https baseurl as an alternative for ftp centralized yum repo

[ihsin]

Copying os Package rpms and creating the repodata for it takes time so add the below repo as an alternative.
Baseurls to use:
baseurl=http://mirror.centos.org/centos/7/os/x86_64/
baseurl=http://mirror.centos.org/centos/7/updates/x86_64/