Release cinder for stable/ussuri

This release picks up new commits to cinder since
the last release from stable/ussuri.

This is being proposed as a convenience to help make sure stable
changes are being released. If the team is good with this going out,
please respond with a +1 to let the release team know it is OK to
proceed.

If it is not wanted at this time, or if there are more changes that
would be good to get merged before doing a stable release, please
leave a -1 with a comment with what the team would prefer. We can
then either abandon this patch, or wait for an update with a new
commit hash to use instead.

$ git log --oneline --no-merges 16.3.0..62da20185
35d56b680 Fix typo in Dell EMC Unity driver documentation
f6d7b0919 Open local image files with "rb" mode
e156653d3 Fix sporadic cleanup unit test failure
dc8a1beab Label temporary files created by image_utils
d9c029c17 Add ports filtering support to Dell EMC XtremIO driver
ba8d19822 Tests: Don't assert notifier not called
34120d498 Backup manager: Synchronously call remove_export
610b59b27 Add support for RBD fast-diff feature for backups stored in Ceph
b32a0f0cf Drop lower-constraints job
d5fed21fd API validation: Add cinder_host type to support ipv6 in manage
1aa907300 Pure: Add default value to pure_host_personality
849fb4f19 [Pure] Fix failing consistency group tempest tests

Signed-off-by: Elod Illes <elod.illes@est.tech>
Change-Id: I61ef6a5099eca7d92b85b1b15e465f8225e13401

deliverables/ussuri/cinder.yaml

@@ -49,6 +49,10 @@ releases:
     projects:
       - repo: openstack/cinder
         hash: 17d3ac3f22e19960a08c036f0c40a72bab4b99dc
+  - version: 16.4.0
+    projects:
+      - repo: openstack/cinder
+        hash: 62da2018555a0a59941e42eecf05a8ffbd66d7a9
 repository-settings:
   openstack/cinder: {}
 branches: