324204e890
When raised, 'cinder.exception.InvalidVolume' with reason 'Invalid volume:
duplicate connectors detected on volume' or 'volume state in error'
comes along with a 500 HTTP error.
This change aims at returning a 409 HTTP error instead.
It takes over patch https://review.opendev.org/c/openstack/cinder/+/856041,
taking comments into account.
Signed-off-by: David Moreau-Simard <moi@dmsimard.com>
Change-Id: I22daff4c806a7c896d2a838b3e2ac0a81113b3e8
(cherry picked from commit 67ac0fca89)