Goal: 

• During the review process of the patches for vTPM live migration support there have been requested changes to the design for the feature. We need to incorporate those change requests.

Acceptance Criteria:

Land the next 3 patches of the series [1]:

• TPM: add RequestContext checks to functional tests
  • https://review.opendev.org/c/openstack/nova/+/966499
• TPM: support instances with `user` secret security
  • https://review.opendev.org/c/openstack/nova/+/942502
• TPM: support instances with `host` secret security
  • https://review.opendev.org/c/openstack/nova/+/941795

[1] https://review.opendev.org/q/topic:%22bp/vtpm-live-migration%22+project:openstack/nova+-is:abandoned