Restore SSH Key title auto-population behavior

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/21823

CHANGELOG

@@ -131,6 +131,7 @@ v 8.12.0 (unreleased)
 
 v 8.11.6 (unreleased)
   - Fix an error where we were unable to create a CommitStatus for running state
+  - Restore SSH Key title auto-population behavior. !6186
 
 v 8.11.5
   - Optimize branch lookups and force a repository reload for Repository#find_branch. !6087

app/views/profiles/keys/index.html.haml

 - page_title "SSH Keys"
+= render 'profiles/head'
 
 .row.prepend-top-default
   .col-lg-3.profile-settings-sidebar

spec/features/profiles/keys_spec.rb

+require 'rails_helper'
+
+describe 'Profile > SSH Keys', feature: true do
+  let(:user) { create(:user) }
+
+  before do
+    login_as(user)
+    visit profile_keys_path
+  end
+
+  describe 'User adds an SSH key' do
+    it 'auto-populates the title', js: true do
+      fill_in('Key', with: attributes_for(:key).fetch(:key))
+
+      expect(find_field('Title').value).to eq 'dummy@gitlab.com'
+    end
+  end
+end