nova: Release 2023.1 Antelope 27.3.0

Bumping MINOR version due to dropping added functionality (libvirt
patches: stop enabling evmcs and reenlightenment; for details about
why we needed this backport, please see the release notes & the
discussion in patch [1])

$ git log --oneline --no-merges 27.2.0..HEAD
c6e1b44134 pwr mgmt: handle live migrations correctly
6d48c129ca Reproducer test for live migration with power management
874acc1ed1 pwr mgmt: make API into a per-driver object
0d0dff801b Power on cores for isolated emulator threads
6ea5c691f3 Reproducer for not powering on isolated emulator threads cores
b60ff8ca5a Add cpuset_reserved helper to instance NUMA topology
bec8f47c06 fup for power management series
f2adeebdf2 Fix nova-metadata-api for ovn dhcp native networks
47271bb705 libvirt: stop enabling hyperv feature reenlightenment
2bffc53ce8 libvirt: Stop unconditionally enabling evmcs
22cccb9bd9 tests: Use GreenThreadPoolExecutor.shutdown(wait=True)
d045b6973c testing: Reset affinity support global variables
74a3139b93 Fix URLs in status check results
5c33bd4dfc cpu: make governors to be optional
bb472db2cd cpu: fix the privsep issue when offlining the cpu
a931b0bf82 Revert "[pwmgmt]ignore missin governor when cpu_state used"
683ecc060e Do not untrack resources of a server being unshelved
23c190a358 Reproduce bug #2025480 in a functional test
75832670af Fix traits to cpu flags mapping
5db7a7b3db Allow live migrate paused instance when post copy is enabled
698421064b Remove outdated comment about allocation ratios
41096f8342 [pwmgmt]ignore missin governor when cpu_state used

[1] https://review.opendev.org/c/openstack/nova/+/909082

Change-Id: Ifef3086f1e3f69797bfe4f868618ba9591a4c4da

deliverables/antelope/nova.yaml

@@ -51,6 +51,10 @@ releases:
     projects:
       - repo: openstack/nova
         hash: 2d05ee3747d36664cca4ac49203667e97e063327
+  - version: 27.3.0
+    projects:
+      - repo: openstack/nova
+        hash: 9cad74c51330ee952fe6c1897902533519739cef
 branches:
   - name: stable/2023.1
     location: 27.0.0.0rc1