Backport line changes from EE

EE-specific line changes were introduced in the following MR:
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/12680

This change resolves most of them

spec/javascripts/fixtures/projects.rb

@@ -18,6 +18,8 @@ describe 'Projects (JavaScript fixtures)', type: :controller do
   end
 
   before do
+    stub_licensed_features(variable_environment_scope: true)
+
     project.add_maintainer(admin)
     sign_in(admin)
     allow(SecureRandom).to receive(:hex).and_return('securerandomhex:thereisnospoon')

spec/support/helpers/test_env.rb

@@ -130,7 +130,7 @@ module TestEnv
   # Keeps gitlab-shell and gitlab-test
   def clean_test_path
     Dir[TMP_TEST_PATH].each do |entry|
-      unless File.basename(entry) =~ /\A(frontend|gitaly|gitlab-(shell|test|test_bare|test-fork|test-fork_bare))\z/
+      unless test_dirs.include?(File.basename(entry))
         FileUtils.rm_rf(entry)
       end
     end
@@ -316,6 +316,7 @@ module TestEnv
   # These are directories that should be preserved at cleanup time
   def test_dirs
     @test_dirs ||= %w[
+      frontend
       gitaly
       gitlab-shell
       gitlab-test