Our CI is currently mistakenly executing the thick img on the e2e
legacy lanes. Furthermore, the e2e daemonset spec provided features
(and uses) the kubeconfig / multus conf generation binaries
provided only on the thick image.
This commit addresses these by enabling the e2e `setup_cluster.sh`
script user to specify the path to the desired deployment
configuration.
Github workflows are updated accordingly.
Signed-off-by: Miguel Duarte Barroso <mdbarroso@redhat.com>