RSpec zero monkey patching mode

The plan for RSpec 4.0 is to disable monkey patching:
https://rspec.info/blog/2013/07/the-plan-for-rspec-3/#zero-monkey-patching-mode

This commit stops using RSpec monkey patching in some specs:
https://relishapp.com/rspec/rspec-core/docs/configuration/zero-monkey-patching-mode

spec/features/admin/admin_runners_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe "Admin Runners" do
+RSpec.describe "Admin Runners" do
   include StubENV
   include FilteredSearchHelpers
   include SortingHelper

spec/features/admin/admin_sees_project_statistics_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe "Admin > Admin sees project statistics" do
+RSpec.describe "Admin > Admin sees project statistics" do
   let(:current_user) { create(:admin) }
   before do

spec/features/admin/admin_sees_projects_statistics_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe "Admin > Admin sees projects statistics" do
+RSpec.describe "Admin > Admin sees projects statistics" do
   let(:current_user) { create(:admin) }
   before do

spec/features/admin/admin_serverless_domains_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Admin Serverless Domains', :js do
+RSpec.describe 'Admin Serverless Domains', :js do
   let(:sample_domain) { build(:pages_domain) }
   before do

spec/features/admin/admin_settings_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Admin updates settings', :clean_gitlab_redis_shared_state, :do_not_mock_admin_mode do
+RSpec.describe 'Admin updates settings', :clean_gitlab_redis_shared_state, :do_not_mock_admin_mode do
   include StubENV
   include TermsHelper
   include UsageDataHelpers

spec/features/admin/admin_system_info_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Admin System Info' do
+RSpec.describe 'Admin System Info' do
   before do
     sign_in(create(:admin))
   end

spec/features/admin/admin_users_impersonation_tokens_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Admin > Users > Impersonation Tokens', :js do
+RSpec.describe 'Admin > Users > Impersonation Tokens', :js do
   let(:admin) { create(:admin) }
   let!(:user) { create(:user) }

spec/features/admin/admin_users_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe "Admin::Users" do
+RSpec.describe "Admin::Users" do
   include Spec::Support::Helpers::Features::ResponsiveTableHelpers
   let!(:user) do

spec/features/admin/admin_uses_repository_checks_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Admin uses repository checks', :request_store, :clean_gitlab_redis_shared_state, :do_not_mock_admin_mode do
+RSpec.describe 'Admin uses repository checks', :request_store, :clean_gitlab_redis_shared_state, :do_not_mock_admin_mode do
   include StubENV
   let(:admin) { create(:admin) }

spec/features/admin/clusters/applications_spec.rb

@@ -3,7 +3,7 @@
 require 'spec_helper'
 require_relative '../../../../spec/features/clusters/installing_applications_shared_examples'
-describe 'Instance-level Cluster Applications', :js do
+RSpec.describe 'Instance-level Cluster Applications', :js do
   include GoogleApi::CloudPlatformHelpers
   let(:user) { create(:admin) }

spec/features/admin/clusters/eks_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Instance-level AWS EKS Cluster', :js do
+RSpec.describe 'Instance-level AWS EKS Cluster', :js do
   let(:user) { create(:admin) }
   before do

spec/features/admin/dashboard_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'admin visits dashboard' do
+RSpec.describe 'admin visits dashboard' do
   include ProjectForksHelper
   before do

spec/features/admin/services/admin_activates_prometheus_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Admin activates Prometheus', :js do
+RSpec.describe 'Admin activates Prometheus', :js do
   let(:admin) { create(:user, :admin) }
   before do

spec/features/atom/dashboard_issues_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe "Dashboard Issues Feed" do
+RSpec.describe "Dashboard Issues Feed" do
   describe "GET /issues" do
     let!(:user)     { create(:user, email: 'private1@example.com', public_email: 'public1@example.com') }
     let!(:assignee) { create(:user, email: 'private2@example.com', public_email: 'public2@example.com') }

spec/features/atom/dashboard_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe "Dashboard Feed" do
+RSpec.describe "Dashboard Feed" do
   describe "GET /" do
     let!(:user) { create(:user, name: "Jonh") }

spec/features/atom/issues_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Issues Feed' do
+RSpec.describe 'Issues Feed' do
   describe 'GET /issues' do
     let!(:user)     { create(:user, email: 'private1@example.com', public_email: 'public1@example.com') }
     let!(:assignee) { create(:user, email: 'private2@example.com', public_email: 'public2@example.com') }

spec/features/atom/users_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe "User Feed" do
+RSpec.describe "User Feed" do
   describe "GET /" do
     let!(:user) { create(:user) }

spec/features/boards/add_issues_modal_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Issue Boards add issue modal', :js do
+RSpec.describe 'Issue Boards add issue modal', :js do
   let(:project) { create(:project, :public) }
   let(:board) { create(:board, project: project) }
   let(:user) { create(:user) }

spec/features/boards/boards_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Issue Boards', :js do
+RSpec.describe 'Issue Boards', :js do
   include DragTo
   include MobileHelpers

spec/features/boards/focus_mode_spec.rb

@@ -2,7 +2,7 @@
 require 'spec_helper'
-describe 'Issue Boards focus mode', :js do
+RSpec.describe 'Issue Boards focus mode', :js do
   let(:project) { create(:project, :public) }
   before do