Description of problem:

During ZTP, when a supermicro server is used, server always boots into existing HD instead of CD, even though the supermicro maintenance logs shows the bootorder instance was set to CD.

Version-Release number of selected component (if applicable):

hub cluster ocp version: 4.11.0

ACM version: 2.5.2

gitops version: 1.6.0

How reproducible: 100%

Steps to Reproduce:
1. Create siteconfig for a supermicro server.  

http://registry.kni-qe-0.lab.eng.rdu2.redhat.com:3000/kni-qe/ztp-site-configs/src/cnfde25-4.11/siteconfig/cnfde25.yaml

2. Trigger ZTP from hub cluster
3. Wait for bmh in provisioned state, then wait for server to boot into CD and start install.

Actual results:

3. BMH becomes provsioned, but server booted into HD. Although I can see the iso was successfully attached to virtual media and supermicro mtc events indicates the boot order instance was set to CD.

Expected results:

Supermicro server boots into CD

Additional info:

• Logs, boot video, bmh: http://registry.ran-vcl01.ptp.lab.eng.bos.redhat.com:8080/images/OCPBUGS-369/
• This issue did not happen on same hub cluster with other spoke servers, e.g., Dell, ZT.
• The same Supermicro server installed successfully from another hub cluster with following versions: OCP: 4.9.21, ACM: 2.4.5, gitops: 1.5.5.