Add dependency_list_vulnerabilities feature flag

See [Add Dependency Scanning information to the Dependency List][1] for
details.

[1]: https://gitlab.com/gitlab-org/gitlab-ee/issues/10077.

ee/app/assets/javascripts/dependencies/components/app.vue

@@ -32,6 +32,11 @@ export default {
       type: String,
       required: true,
     },
+    dependencyListVulnerabilities: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   data() {
     return {

ee/app/assets/javascripts/dependencies/index.js

@@ -5,6 +5,7 @@ import createStore from './store';
 export default () => {
   const el = document.querySelector('#js-dependencies-app');
   const { endpoint, emptyStateSvgPath, documentationPath } = el.dataset;
+  const { dependencyListVulnerabilities = false } = gon.features || {};
 
   const store = createStore();
 
@@ -20,6 +21,7 @@ export default () => {
           endpoint,
           emptyStateSvgPath,
           documentationPath,
+          dependencyListVulnerabilities,
         },
       });
     },

ee/app/controllers/projects/dependencies_controller.rb

@@ -4,6 +4,10 @@ module Projects
   class DependenciesController < Projects::ApplicationController
     before_action :check_feature_enabled!
 
+    before_action do
+      push_frontend_feature_flag(:dependency_list_vulnerabilities)
+    end
+
     def check_feature_enabled!
       render_404 unless project.feature_available?(:dependency_list)
     end