fix some specs

ee/spec/tasks/gitlab/elastic_rake_spec.rb

@@ -2,7 +2,7 @@
 
 require 'rake_helper'
 
-RSpec.describe 'gitlab:elastic namespace rake tasks', :elastic, :silence_stdout do
+RSpec.describe 'gitlab:elastic namespace rake tasks', :silence_stdout do
   before do
     Rake.application.rake_require 'tasks/gitlab/elastic'
   end
@@ -56,6 +56,8 @@
   end
 
   describe 'create_empty_index' do
+    let(:es_helper) { ::Gitlab::Elastic::Helper.default }
+
     subject { run_rake_task('gitlab:elastic:create_empty_index') }
 
     before do
@@ -124,7 +126,7 @@
       refresh_index!
 
       migrations = Elastic::DataMigrationService.migrations.map(&:version)
-      expect(Elastic::MigrationRecord.load_versions(completed: true)).to eq(migrations)
+      expect(Elastic::MigrationRecord.load_versions(completed: true)).to contain_exactly(migrations)
     end
   end