rht/ocp-ing-ichp-materials: Playbooks and other exercise collaterals for ING ICHP training @ 017c2f2986ada2f5675ad09d479a3957fe7bc9f8

Grega Bremec 017c2f2986 remove unused vars from comments, add group creation task		hai 1 mes
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roles	017c2f2986 remove unused vars from comments, add group creation task	hai 1 mes
ansible.cfg	5ba72150ed copy and adapt playbook and roles to current env	hai 1 mes
inventory.yml	336dd1c6e4 add openshift attrs, turn off direct grants for openshift oidc client	hai 1 mes
pre-flight.yml	afa09a65b9 rudimentary oidc integration added	hai 1 mes