Improve Telemetry danger-bot

  - Mention telemetry group only for MRs
    that are ready for review, don't have
    Draft in title
  - Use quotes or not for group name

danger/telemetry/Dangerfile

@@ -2,7 +2,7 @@
 
 TELEMETRY_CHANGED_FILES_MESSAGE = <<~MSG
 For the following files, a review from the [Data team and Telemetry team](https://gitlab.com/groups/gitlab-org/growth/telemetry/engineers/-/group_members?with_inherited_permissions=exclude) is recommended
-Please check the ~telemetry [guide](https://docs.gitlab.com/ee/development/telemetry/usage_ping.html) and reach out to @gitlab-org/growth/telemetry/engineers group for a review.
+Please check the ~telemetry [guide](https://docs.gitlab.com/ee/development/telemetry/usage_ping.html) and reach out to %<telemetry_engineers_group>s group for a review.
 
 %<changed_files>s
 
@@ -13,6 +13,8 @@ UPDATE_METRICS_DEFINITIONS_MESSAGE = <<~MSG
 
 MSG
 
+TELEMETRY_ENGINEERS_GROUP = '@gitlab-org/growth/telemetry/engineers'
+
 tracking_files = [
   'lib/gitlab/tracking.rb',
   'spec/lib/gitlab/tracking_spec.rb',
@@ -28,7 +30,14 @@ snowplow_events_changed_files = git.modified_files & tracking_files
 changed_files = (usage_data_changed_files + snowplow_events_changed_files)
 
 if changed_files.any?
-  warn format(TELEMETRY_CHANGED_FILES_MESSAGE, changed_files: helper.markdown_list(changed_files))
+
+  mention = if helper.draft_mr?
+              "`#{TELEMETRY_ENGINEERS_GROUP}`"
+            else
+              TELEMETRY_ENGINEERS_GROUP
+            end
+
+  warn format(TELEMETRY_CHANGED_FILES_MESSAGE, changed_files: helper.markdown_list(changed_files), telemetry_engineers_group: mention)
   warn format(UPDATE_METRICS_DEFINITIONS_MESSAGE) unless helper.changed_files(/usage_ping\.md/).any?
 
   telemetry_labels = ['telemetry']

lib/gitlab/danger/helper.rb

@@ -214,6 +214,12 @@ module Gitlab
         title.gsub(DRAFT_REGEX, '').gsub(/`/, '\\\`')
       end
 
+      def draft_mr?
+        return false unless gitlab_helper
+
+        DRAFT_REGEX.match?(gitlab_helper.mr_json['title'])
+      end
+
       def security_mr?
         return false unless gitlab_helper
 

spec/lib/gitlab/danger/helper_spec.rb

@@ -435,6 +435,28 @@ RSpec.describe Gitlab::Danger::Helper do
     end
   end
 
+  describe '#draft_mr?' do
+    it 'returns false when `gitlab_helper` is unavailable' do
+      expect(helper).to receive(:gitlab_helper).and_return(nil)
+
+      expect(helper).not_to be_draft_mr
+    end
+
+    it 'returns true for a draft MR' do
+      expect(fake_gitlab).to receive(:mr_json)
+        .and_return('title' => 'Draft: My MR title')
+
+      expect(helper).to be_draft_mr
+    end
+
+    it 'returns false for non draft MR' do
+      expect(fake_gitlab).to receive(:mr_json)
+        .and_return('title' => 'My MR title')
+
+      expect(helper).not_to be_draft_mr
+    end
+  end
+
   describe '#cherry_pick_mr?' do
     it 'returns false when `gitlab_helper` is unavailable' do
       expect(helper).to receive(:gitlab_helper).and_return(nil)