Translation update: Ignore X-Generator
Translation update: Ignore X-Generator

Add X-Generator header to ignore list: If this variable changes, there's
no need to update the translations.
Refactor to write regex only once.

Change-Id: Ic4d1ef140c1419bf14e43bd89b371d8324c79193

openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config,noorul/os-project-config,dongwenjuan/project-config,dongwenjuan/project-config,noorul/os-project-config,Tesora/tesora-project-config