[CentOS] Automated XFCE install from kickstart and epel-release issue

Hello,

I am working on a kickstart automated Centos 7 GUI vm deployment.

Defining gnome desktop in kickstart works.
@gnome-desktop - A GNOME desktop

However Centos and anything from the epel-release such as xrdp does not 
work.

I have tried it on different ways.


repo --name=epel-release
%packages
#epel-release         # DOES NOT WORK
@ Core                      #@core
@ Base                      #@base
@ X Window System           #@x11
#@ XFCE                     # DOES NOT WORK
@xfce-desktop        # DOES NOT WORK
#@Server with GUI  # DOES NOT WORK
#Xfce                # DOES NOT WORK
#xrdp  # DOES NOT WORK


I have followed the recommendations in this discussion:

https://unix.stackexchange.com/questions/81354/import-epel-gpg-key-in-kickstart-post-installation

None of them worked. In the %post% section yum -y commands seems to be 
ignored.

I would also like to do a full system upgrade automatically.

Any ideas?

Thanks