Sync only local cell in nova bootstrap & upgrade

Added the --local_cell argument to nova db sync commands during
bootstrap and upgrade.

This was previously thought to have no effect [1], but has since been
discovered to fail when rotating the nova database password.

[1] https://opendev.org/openstack/kolla-ansible/src/branch/master/ansible/roles/nova/tasks/bootstrap_service.yml#L2-L3

Closes-Bug: #2045558
Change-Id: Ic64eb51325b3503a14ebab9b9ff2f4d9caec734a

Author: Alex-Welsh

docker/nova/nova-api/extend_start.sh

@@ -8,14 +8,14 @@
 # of the KOLLA_BOOTSTRAP variable being set, including empty.
 if [[ "${!KOLLA_BOOTSTRAP[@]}" ]]; then
     nova-manage api_db sync
-    nova-manage db sync
+    nova-manage db sync --local_cell
     nova-manage db online_data_migrations
     exit 0
 fi
 
 if [[ "${!KOLLA_UPGRADE[@]}" ]]; then
     nova-manage api_db sync
-    nova-manage db sync
+    nova-manage db sync --local_cell
     exit 0
 fi
 

releasenotes/notes/nova-sync-local-cell-8e3258f4b410d25c.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    The Nova API container extended startup script has been updated to only
+    sync the local Nova cell. This resolves an error that would occur when the
+    Nova database password changes. More details can be found on `this bug
+    report <https://bugs.launchpad.net/kolla/+bug/2045558>`__.