Add test_platform job in vnf-onboarding

Add gerrit repo as well.

Related-PROD: PROD-18583
Change-Id: Ifb5150817c18f23770d67b72ba8919bbce54ae8c
diff --git a/gerrit/client/project/vnf_onboarding.yml b/gerrit/client/project/vnf_onboarding.yml
index 9cefb95..1e7d238 100644
--- a/gerrit/client/project/vnf_onboarding.yml
+++ b/gerrit/client/project/vnf_onboarding.yml
@@ -42,3 +42,11 @@
           require_change_id: true
           require_agreement: false
           merge_content: true
+        vnf-onboarding/platform-tests:
+          enabled: true
+          description: VNF onboarding platform tests
+          upstream: https://gerrit.mcp.mirantis.net/vnf-onboarding/platform-tests
+          access: ${gerrit:client:default_access}
+          require_change_id: true
+          require_agreement: false
+          merge_content: true