Merge branch 'filter-import-url' into 'master'

Filter import_url params because they may contain auth information. Fixes #14199

cc @dzaporozhets @DouweM tagging you since this is security related.

See merge request !3174

config/application.rb

@@ -34,7 +34,7 @@ module Gitlab
     config.encoding = "utf-8"
     # Configure sensitive parameters which will be filtered from the log file.
-    config.filter_parameters.push(:password, :password_confirmation, :private_token, :otp_attempt, :variables)
+    config.filter_parameters.push(:password, :password_confirmation, :private_token, :otp_attempt, :variables, :import_url)
     # Enable escaping HTML in JSON.
     config.active_support.escape_html_entities_in_json = true