opensearch-project/user-behavior-insights#77 Adding API tests YAML file.

Signed-off-by: jzonthemtn <jeff.zemerick@mtnfog.com>

Author: jzonthemtn

src/test_workflow/smoke_test/smoke_tests_spec/2.x/ubi.yml

@@ -0,0 +1,9 @@
+---
+info:
+  title: OpenSearch UBI plugin smoke tests
+  version: default
+name: ubi
+paths:
+  /_plugins/ubi/initialize:
+    POST:
+      parameters: []