I am trying to provision some RHEL 5 VMs and it has errors during the post install phase.

Steps to reproduce:
- configure the environments to subscribe to Red Hat Network.
- provision a VM for RHEL 5.

Result:
The install.post.log will contain an error: "line 100: yum-config-manager: command not found"

The root cause of the error seems to be related to the unavailability of yum-config-manager for RHEL 5 as described here: https://access.redhat.com/solutions/265523.