[manila-tempest-plugin] Tag zed-last

Zed branch is moving to unmaintained state now[1]. Tempest and tempest
plugins are branchless which means master version of Tempest and
its plugins is used to test the supported stable branches.

Once any stable branch is moved to unmaintained state then, Tempest and
its plugins compatible tag[2][3] needs to be released which can be used
to test the unmaintained stable branches.

Tagging 'zed-last' as well as a new version with latest hash.

[1] https://review.opendev.org/q/topic:%22zed-unmaintained%22
[2] https://docs.openstack.org/tempest/latest/stable_branch_support_policy.html
[3] https://docs.openstack.org/tempest/latest/tempest_and_plugins_compatible_version_policy.html

Change-Id: I6b23b15103395cb98bfbd1834040af3273602803

deliverables/dalmatian/manila-tempest-plugin.yaml

@@ -9,3 +9,8 @@ repository-settings:
     tarball-base: manila-tempest-plugin
 team: manila
 type: tempest-plugin
+releases:
+  - version: 2.3.0
+    projects:
+      - repo: openstack/manila-tempest-plugin
+        hash: 57496da22b134bf2ccef0d97ebe0cc32f0e4560b

deliverables/zed/manila-tempest-plugin.yaml

@@ -22,3 +22,7 @@ releases:
     projects:
       - repo: openstack/manila-tempest-plugin
         hash: 045dd282fa9ec6de8ee888f9ff2c96fbd22cebe1
+  - version: zed-last
+    projects:
+      - repo: openstack/manila-tempest-plugin
+        hash: 57496da22b134bf2ccef0d97ebe0cc32f0e4560b