Mark requirements' ocata branch as EOL

Since every project transitioned to End of Life already, requirements
should have tagged with EOL, too. This patch tags latest patch on
stable/ocata with ocata-eol and the branch can be deleted afterwards.

Change-Id: I197457d2160a1668013854bd390779dc3c2c9002

deliverables/ocata/requirements.yaml

@@ -15,6 +15,10 @@ releases:
       - hash: 495027bda42431678845f40f084191623c7b2755
         repo: openstack/requirements
     version: ocata-em
+  - projects:
+      - hash: f801364d20fdd37864448b37bf7fa267cf0b956d
+        repo: openstack/requirements
+    version: ocata-eol
 team: requirements
 type: other
 repository-settings: