I spoke with vkadlcik about yum repository configuration. Václav has proposed to remove these lines from config file:

• sslverify=0
  Vašek said: If it mean that user have to install some certification then this fact should be mentioned in documentation.
  I removed this parameter and I was still able to install RPM. I didn't have to install any certification, so we can remove this parameter I guess.

• gpgcheck=0
  GPG check should be enabled (but we have to sign RPM package JBDS-4197)

• includepkgs=rh-eclipse*
  we don't need that

• skip_if_unavailable=1
  This feature is disabled by default. We haven't reason to change this behaviour. It might seems that we are not able to keep our repository online. It depends on the user if he would like to skip unavailable repositories.

We need to update this guide https://devstudio.jboss.com/10.0/snapshots/rpms/10.3.0/x86_64/
and we also need to update install guide (CC:sbharadw@redhat.com)