Allow the Projects Dashboard to be validated

app/views/shared/projects/_search_form.html.haml

 - form_field_classes = local_assigns[:admin_view] || !Feature.enabled?(:project_list_filter_bar) ? 'input-short js-projects-list-filter' : ''
 - placeholder = local_assigns[:search_form_placeholder] ? search_form_placeholder : 'Filter by name...'
 
-= form_tag filter_projects_path, method: :get, class: 'project-filter-form', id: 'project-filter-form' do |f|
+= form_tag filter_projects_path, method: :get, class: 'project-filter-form qa-project-filter-form', id: 'project-filter-form' do |f|
   = search_field_tag :name, params[:name],
     placeholder: placeholder,
     class: "project-filter-form-field form-control #{form_field_classes}",

qa/qa/page/dashboard/projects.rb

@@ -5,7 +5,7 @@ module QA
     module Dashboard
       class Projects < Page::Base
         view 'app/views/shared/projects/_search_form.html.haml' do
-          element :form_filter_by_name, /form_tag.+id: 'project-filter-form'/ # rubocop:disable QA/ElementWithPattern
+          element :project_filter_form, required: true
         end
 
         def go_to_project(name)
@@ -14,10 +14,14 @@ module QA
           find_link(text: name).click
         end
 
+        def self.path
+          '/'
+        end
+
         private
 
         def filter_by_name(name)
-          page.within('form#project-filter-form') do
+          within_element(:project_filter_form) do
             fill_in :name, with: name
           end
         end