Centos/RHEL image generation

[Kerwin Macrohon]

Hi, encountered an error for generating an image (redhat 6.7). 
Encountered an error in the certificate (pycurl error).   I have no 
errors for generating rhel 7.2.  I built the basefile via mk-basefile 
using my own rhel repository from iso. Do we have an archive of 
basefiles?  Planning to use centos 6.7 as base image for generating the 
image. Thank you guys!