add additional tags

Author: MohammadiIram

.tekton/openvino-model-server-v2-24-push.yaml

@@ -30,6 +30,9 @@ spec:
     value: '{{revision}}'
   - name: output-image
     value: quay.io/modh/openvino_model_server:{{target_branch}}
+  - name: additional-tags
+    value:
+    - '{{target_branch}}-{{revision}}'
   - name: dockerfile
     value: Dockerfile.redhat
   - name: path-context