Merge branch '6361-move-ee-notify-text-haml' into 'master'

Fixes EE differences for app/views/repository_check_mailer/notify.text.haml

Closes #6361

See merge request gitlab-org/gitlab-ee!12149

app/views/repository_check_mailer/notify.text.haml

@@ -4,9 +4,4 @@
 
 = _("You are receiving this message because you are a GitLab administrator for %{url}.") % { url: Gitlab.config.gitlab.url }
 
--# EE-specific start
-- if Gitlab::CurrentSettings.email_additional_text.present?
-  \
-  = '---'
-  = Gitlab::Utils.nlbr(Gitlab::CurrentSettings.email_additional_text)
--# EE-specific end
+= render_if_exists 'repository_check_mailer/email_additional_text'

ee/app/views/repository_check_mailer/_email_additional_text.text.haml

+- if Gitlab::CurrentSettings.email_additional_text.present?
+  \
+  = '---'
+  = Gitlab::Utils.nlbr(Gitlab::CurrentSettings.email_additional_text)