[COMPLIANCE] Add Copyright and License Headers (#1829)

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

addons/rose/app/styles/rose/components/metadata-list/_index.scss

@@ -1,3 +1,8 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+
 .rose-metadata-list {
   display: flex;
   flex-direction: row;

addons/rose/tests/integration/components/rose/metadata-list/index-test.js

@@ -1,3 +1,8 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+
 import { module, test } from 'qunit';
 import { setupRenderingTest } from 'ember-qunit';
 import { render } from '@ember/test-helpers';