Updated configurations to point to openstack-helm-infra
for reference to helm-toolkit as helm-toolkit has been
removed from the openstack-helm repo [0]
Also aligned with changes to the keystone user set up in
OSH using Helm ToolKit so as to get pass Helm Lint.
[0] https://review.openstack.org/#/c/558065/
Change-Id: I10645c907565df4fd7920ae6ef0615348517f969