Description of problem:

The 'kernelcmd' parameter works only if set on a top level host group, and does not work if set on a child host group

How reproducible:

Always

Is this issue a regression from an earlier version:

No.

Steps to Reproduce:

1. Set the 'kernelcmd' parameter on a child host group.

2. Try to provision a system associated with the child host group.

Actual behavior:
The 'kernelcmd' parameter set on the child host group does not take effect.

Expected behavior:
The 'kernelcmd' parameter set on the child host group should take effect, similar to what happens if the 'kernelcmd' parameter is set on a top level host group.

Business Impact / Additional info: