Fix issue with K8s and Openstack in same env

The targeting of mcp.Validate.runContainerConfiguration is incorrect it
makes an incorrect assumption that there will only be openstack nodes
called ctl01.

This patch fixes the issue by utilizing salt.pillar instead to get the
correct data.

Change-Id: If044f72c9f3f2e76feccd866a23c264681685d34
1 file changed