Move dashboard group spinach test to rspec

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

features/dashboard/group.feature

-@dashboard
-Feature: Dashboard Group
-  Background:
-    Given I sign in as "John Doe"
-    And "John Doe" is owner of group "Owned"
-    And "John Doe" is guest of group "Guest"
-
-  Scenario: Create a group from dasboard
-    And I visit dashboard groups page
-    And I click new group link
-    And submit form with new group "Samurai" info
-    Then I should be redirected to group "Samurai" page
-    And I should see newly created group "Samurai"

features/steps/dashboard/group.rb

-class Spinach::Features::DashboardGroup < Spinach::FeatureSteps
-  include SharedAuthentication
-  include SharedGroup
-  include SharedPaths
-  include SharedUser
-
-  step 'I click new group link' do
-    click_link "New Group"
-  end
-
-  step 'submit form with new group "Samurai" info' do
-    fill_in 'group_path', with: 'Samurai'
-    fill_in 'group_description', with: 'Tokugawa Shogunate'
-    click_button "Create group"
-  end
-
-  step 'I should be redirected to group "Samurai" page' do
-    expect(current_path).to eq group_path(Group.find_by(name: 'Samurai'))
-  end
-
-  step 'I should see newly created group "Samurai"' do
-    expect(page).to have_content "Samurai"
-    expect(page).to have_content "Tokugawa Shogunate"
-  end
-end

spec/features/dashboard/group_spec.rb

+require 'spec_helper'
+
+RSpec.describe 'Dashboard Group', feature: true do
+  before do
+    login_as(:user)
+  end
+
+  it 'creates new grpup' do
+    visit dashboard_groups_path
+    click_link 'New Group'
+
+    fill_in 'group_path', with: 'Samurai'
+    fill_in 'group_description', with: 'Tokugawa Shogunate'
+    click_button 'Create group'
+
+    expect(current_path).to eq group_path(Group.find_by(name: 'Samurai'))
+    expect(page).to have_content('Samurai')
+    expect(page).to have_content('Tokugawa Shogunate')
+  end
+end