Add `feature: true` metadata to feature specs

spec/features/admin/builds_spec.rb

 require 'spec_helper'
-describe "Admin Builds" do
+describe "Admin Builds", feature: true do
   let(:project) { FactoryGirl.create :project }
   let(:commit) { FactoryGirl.create :commit, project: project }
   let(:build) { FactoryGirl.create :build, commit: commit }

spec/features/admin/events_spec.rb

 require 'spec_helper'
-describe "Admin Events" do
+describe "Admin Events", feature: true do
   let(:event) { FactoryGirl.create :admin_event }
   
   before do

spec/features/admin/projects_spec.rb

 require 'spec_helper'
-describe "Admin Projects" do
+describe "Admin Projects", feature: true do
   let(:project) { FactoryGirl.create :project }
   before do

spec/features/admin/runners_spec.rb

 require 'spec_helper'
-describe "Admin Runners" do
+describe "Admin Runners", feature: true do
   before do
     skip_admin_auth
     login_as :user

spec/features/builds_spec.rb

 require 'spec_helper'
-describe "Builds" do
+describe "Builds", feature: true do
   before do
     @project = FactoryGirl.create :project
     @commit = FactoryGirl.create :commit, project: @project

spec/features/commits_spec.rb

 require 'spec_helper'
-describe "Commits" do
+describe "Commits", feature: true do
   context "Authenticated user" do
     before do
       login_as :user

spec/features/events_spec.rb

 require 'spec_helper'
-describe "Events" do
+describe "Events", feature: true do
   let(:project) { FactoryGirl.create :project }
   let(:event) { FactoryGirl.create :admin_event, project: project }
   

spec/features/lint_spec.rb

 require 'spec_helper'
-describe "Lint" do
+describe "Lint", feature: true do
   before do
     login_as :user
   end

spec/features/projects_spec.rb

 require 'spec_helper'
-describe "Projects" do
+describe "Projects", feature: true do
   before do
     login_as :user
     @project = FactoryGirl.create :project, name: "GitLab / gitlab-shell"

spec/features/runners_spec.rb

 require 'spec_helper'
-describe "Runners" do
+describe "Runners", feature: true do
   before do
     login_as :user
   end

spec/features/triggers_spec.rb

 require 'spec_helper'
-describe 'Variables' do
+describe 'Variables', feature: true do
   before do
     login_as :user
     @project = FactoryGirl.create :project

spec/features/variables_spec.rb

 require 'spec_helper'
-describe "Variables" do
+describe "Variables", feature: true do
   before do
     login_as :user
   end