[COMPLIANCE] Add Copyright and License Headers (#1660)

Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>
Co-authored-by: Carlos Alcaide Corvo <ccorvo@hashicorp.com>

ui/admin/tests/unit/instance-initializers/feature-edition-test.js

@@ -1,3 +1,8 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+
 import Application from '@ember/application';
 
 import config from 'admin/config/environment';