Move Vulnerable out of EE module

It doesn't need to be there since it doesn't exist in CE,
and it lets us avoid overriding Rubocop's dislike for EE
modules being required inside classes.

ee/app/models/concerns/ee/vulnerable.rb

-# frozen_string_literal: true
-
-module EE
-  module Vulnerable
-    extend ActiveSupport::Concern
-
-    def latest_vulnerabilities
-      Vulnerabilities::Occurrence
-        .for_pipelines(all_pipelines.with_vulnerabilities.latest_successful_ids_per_project)
-    end
-
-    def latest_vulnerabilities_with_sha
-      Vulnerabilities::Occurrence
-        .for_pipelines_with_sha(all_pipelines.with_vulnerabilities.latest_successful_ids_per_project)
-    end
-
-    def all_vulnerabilities
-      Vulnerabilities::Occurrence
-        .for_pipelines(all_pipelines.with_vulnerabilities.success)
-    end
-  end
-end

ee/app/models/concerns/vulnerable.rb

+# frozen_string_literal: true
+
+module Vulnerable
+  def latest_vulnerabilities
+    Vulnerabilities::Occurrence
+      .for_pipelines(all_pipelines.with_vulnerabilities.latest_successful_ids_per_project)
+  end
+
+  def latest_vulnerabilities_with_sha
+    Vulnerabilities::Occurrence
+      .for_pipelines_with_sha(all_pipelines.with_vulnerabilities.latest_successful_ids_per_project)
+  end
+
+  def all_vulnerabilities
+    Vulnerabilities::Occurrence
+      .for_pipelines(all_pipelines.with_vulnerabilities.success)
+  end
+end

ee/app/models/ee/group.rb

@@ -10,7 +10,7 @@ module EE
     extend ::Gitlab::Utils::Override
 
     prepended do
-      include ::EE::Vulnerable # rubocop: disable Cop/InjectEnterpriseEditionModule
+      include Vulnerable
       include TokenAuthenticatable
       include InsightsFeature
 

ee/spec/models/group_spec.rb

@@ -3,7 +3,7 @@ require 'spec_helper'
 describe Group do
   let(:group) { create(:group) }
 
-  it_behaves_like EE::Vulnerable
+  it_behaves_like Vulnerable
   it { is_expected.to include_module(EE::Group) }
 
   describe 'associations' do

ee/spec/support/shared_examples/models/concerns/ee/vulnerable_shared_examples.rb → ee/spec/support/shared_examples/models/concerns/vulnerable_shared_examples.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-shared_examples_for EE::Vulnerable do
+shared_examples_for Vulnerable do
   let(:project) { create(:project, namespace: group) }
   let(:external_project) { create(:project) }
   let(:failed_pipeline) { create(:ci_pipeline, :failed, project: project) }