Move admin deploy keys spinach test to rspec

https://gitlab.com/gitlab-org/gitlab-ce/issues/23036

features/admin/deploy_keys.feature

-@admin
-Feature: Admin Deploy Keys
-  Background:
-    Given I sign in as an admin
-    And there are public deploy keys in system
-
-  Scenario: Deploy Keys list
-    When I visit admin deploy keys page
-    Then I should see all public deploy keys
-
-  Scenario: Deploy Keys new
-    When I visit admin deploy keys page
-    And I click 'New Deploy Key'
-    And I submit new deploy key
-    Then I should be on admin deploy keys page
-    And I should see newly created deploy key

features/steps/admin/deploy_keys.rb → spec/features/admin/admin_deploy_keys_spec.rb

-class Spinach::Features::AdminDeployKeys < Spinach::FeatureSteps
-  include SharedAuthentication
-  include SharedPaths
-  include SharedAdmin
+require 'spec_helper'
 
-  step 'there are public deploy keys in system' do
-    create(:deploy_key, public: true)
-    create(:another_deploy_key, public: true)
-  end
+RSpec.describe 'admin deploy keys', type: :feature do
+  let!(:deploy_key) { create(:deploy_key, public: true) }
+  let!(:another_deploy_key) { create(:another_deploy_key, public: true) }
 
-  step 'I should see all public deploy keys' do
-    DeployKey.are_public.each do |p|
-      expect(page).to have_content p.title
-    end
+  before do
+    login_as(:admin)
   end
 
-  step 'I visit admin deploy key page' do
-    visit admin_deploy_key_path(deploy_key)
+  it 'show all public deploy keys' do
+    visit admin_deploy_keys_path
+
+    expect(page).to have_content(deploy_key.title)
+    expect(page).to have_content(another_deploy_key.title)
   end
 
-  step 'I visit admin deploy keys page' do
+  it 'creates new deploy key' do
     visit admin_deploy_keys_path
-  end
 
-  step 'I click \'New Deploy Key\'' do
     click_link 'New Deploy Key'
-  end
+    fill_in 'deploy_key_title', with: 'laptop'
+    fill_in 'deploy_key_key', with: 'ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAzrEJUIR6Y03TCE9rIJ+GqTBvgb8t1jI9h5UBzCLuK4VawOmkLornPqLDrGbm6tcwM/wBrrLvVOqi2HwmkKEIecVO0a64A4rIYScVsXIniHRS6w5twyn1MD3sIbN+socBDcaldECQa2u1dI3tnNVcs8wi77fiRe7RSxePsJceGoheRQgC8AZ510UdIlO+9rjIHUdVN7LLyz512auAfYsgx1OfablkQ/XJcdEwDNgi9imI6nAXhmoKUm1IPLT2yKajTIC64AjLOnE0YyCh6+7RFMpiMyu1qiOCpdjYwTgBRiciNRZCH8xIedyCoAmiUgkUT40XYHwLuwiPJICpkAzp7Q== user@laptop'
+    click_button 'Create'
 
-  step 'I submit new deploy key' do
-    fill_in "deploy_key_title", with: "laptop"
-    fill_in "deploy_key_key", with: "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAzrEJUIR6Y03TCE9rIJ+GqTBvgb8t1jI9h5UBzCLuK4VawOmkLornPqLDrGbm6tcwM/wBrrLvVOqi2HwmkKEIecVO0a64A4rIYScVsXIniHRS6w5twyn1MD3sIbN+socBDcaldECQa2u1dI3tnNVcs8wi77fiRe7RSxePsJceGoheRQgC8AZ510UdIlO+9rjIHUdVN7LLyz512auAfYsgx1OfablkQ/XJcdEwDNgi9imI6nAXhmoKUm1IPLT2yKajTIC64AjLOnE0YyCh6+7RFMpiMyu1qiOCpdjYwTgBRiciNRZCH8xIedyCoAmiUgkUT40XYHwLuwiPJICpkAzp7Q== user@laptop"
-    click_button "Create"
-  end
-
-  step 'I should be on admin deploy keys page' do
     expect(current_path).to eq admin_deploy_keys_path
-  end
-
-  step 'I should see newly created deploy key' do
-    expect(page).to have_content(deploy_key.title)
-  end
-
-  def deploy_key
-    @deploy_key ||= DeployKey.are_public.first
+    expect(page).to have_content('laptop')
   end
 end