Description of problem:
After creation of a subscription on a HPE node and rebooting it the subscription was deleted -> this was checked through the BMC.
oc get bmceventsubscriptions.metal3.io -A shows the subscription still exists.

Version-Release number of selected component (if applicable):
4.10.0-0.nightly-2022-03-01-224543

How reproducible:
100%

Steps to Reproduce:
1. Create a subscription on a node.
2. Reboot the node.
3. Check through the BMC that the subscription still exists.

Actual results:
The subscription was deleted.

Expected results:
The subscription should remain intact after a reboot.

Additional info:
HPE DL380 - Firmware Revision: 2.31