Release trove RC1 for Zed

This proposed a RC1 release for trove to get any merged changes
out prior to the RC1 deadline for Zed going into effect.

If the team is ready to proceed, please leave a +1 to acknowledge this
release and we will process right away. If the team is working on any
final merges, leave a -1 with some detail on the status and update the
patch with the new commit hash to use when ready.

Patches with no response will be merged by early Friday, September 16.

Signed-off-by: Elod Illes <elod.illes@est.tech>
Change-Id: Ifeea33a6bf299fe7acce4f5c90db98ba2d301ade

deliverables/zed/trove.yaml

@@ -5,3 +5,11 @@ team: trove
 type: service
 repository-settings:
   openstack/trove: {}
+releases:
+  - version: 18.0.0.0rc1
+    projects:
+      - repo: openstack/trove
+        hash: 0ec4d0487bfd990697752133335b799f409e4418
+branches:
+  - name: stable/zed
+    location: 18.0.0.0rc1