This is an excerpt from a kickstart.cfg file that was used to install QAS. You can add more to it if you need to for joining QAS. This is a very basic example of it.
####################################
%post
####################################
echo "vas setup"
#-------------------------------------------------
# Setup Quest Vas authentication
# Repo
cat > /etc/yum.repos.d/quest.repo <<EOF
[quest]
name=quest
# modify begin #
baseurl=http://10.5.37.144:9180/yum/qasrepo
# modify end #
enabled=1
gpgcheck=0
EOF
# Install
yum install -y -e 0 vasclnt vasgp
Please note: Kickstart is outside the scope of the Technical Support team. In support we deal with product problems and not implementation or integration and as such are not the correct department to offer you these services. You may wish to seek the advice of our Professional Services Organization.
For information on how to contact them please visit https://support.quest.com/professional-services-product-select