Add datateam danger file to danger list and danger test

danger/datateam/Dangerfile

@@ -2,7 +2,7 @@
 # rubocop:disable Style/SignalException
 
 CHANGED_SCHEMA_MESSAGE = <<~MSG
-Tagging @gitlab-data/engineers to be notified about changes to the db/structure.sql file.
+Mentioning @gitlab-data/engineers to notify the team about changes to the db/structure.sql file.
 
 MSG
 

spec/tooling/danger/project_helper_spec.rb

@@ -220,7 +220,7 @@ RSpec.describe Tooling::Danger::ProjectHelper do
 
   describe '.local_warning_message' do
     it 'returns an informational message with rules that can run' do
-      expect(described_class.local_warning_message).to eq('==> Only the following Danger rules can be run locally: changelog, changes_size, commit_messages, database, documentation, duplicate_yarn_dependencies, eslint, karma, pajamas, pipeline, prettier, product_intelligence, utility_css')
+      expect(described_class.local_warning_message).to eq('==> Only the following Danger rules can be run locally: changelog, changes_size, commit_messages, database, datateam, documentation, duplicate_yarn_dependencies, eslint, karma, pajamas, pipeline, prettier, product_intelligence, utility_css')
     end
   end
 

tooling/danger/project_helper.rb

@@ -8,6 +8,7 @@ module Tooling
         changes_size
         commit_messages
         database
+        datateam
         documentation
         duplicate_yarn_dependencies
         eslint