Add canary specific storage test

qa/qa/specs/features/browser_ui/3_create/repository/push_to_canary_gitaly_spec.rb

+# frozen_string_literal: true
+
+module QA
+  RSpec.describe 'Create', only: { subdomain: %i[staging staging-canary] } do
+    describe 'Git push to canary Gitaly node over HTTP' do
+      it 'pushes to a project using a canary specific Gitaly repository storage', :smoke, :requires_admin, testcase: 'https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/351116' do
+        Flow::Login.sign_in_as_admin
+
+        project = Resource::Project.fabricate_via_api! do |storage_project|
+          storage_project.name = 'canary-specific-repository-storage'
+          storage_project.repository_storage = 'nfs-file-cny01' # TODO: move to ENV var
+        end
+
+        Resource::Repository::Push.fabricate! do |push|
+          push.repository_http_uri = project.repository_http_location.uri
+          push.file_name = 'README.md'
+          push.file_content = "# This is a test project named #{project.name}"
+          push.commit_message = 'Add README.md'
+          push.new_branch = true
+        end
+
+        project.visit!
+
+        Page::Project::Show.perform do |project_page|
+          expect(project_page).to have_file('README.md')
+          expect(project_page).to have_readme_content("This is a test project named #{project.name}")
+        end
+      end
+    end
+  end
+end