Adding scripts for running RC2 testcases

Adding scripts for running RC2 testcases

This patch adds support for running RC2 Functest
testcases suite on the K8s cluster deployed by
Kuberef deployer.

It leverages on Gitlab CI/CD variables to prepare
next Docker runners (for the time being, the
deployment script wrongly forces Shell runners).

Co-Authored-By: Cédric Ollivier <cedric.ollivier@orange.com>
Change-Id: I7652aa817ad9b434235abf0fab9ba63f4ad2f23e
Signed-off-by: Rihab Banday <rihab.banday@ericsson.com>
Reviewed-on: https://gerrit.opnfv.org/gerrit/c/kuberef/+/71188
Tested-by: jenkins-ci <jenkins-opnfv-ci@opnfv.org>
Reviewed-by: Cedric Ollivier <cedric.ollivier@orange.com>