Add detection for Google Cloud (#2322)

* Add detection for Google Cloud

This can be verified in its [documentation](https://cloud.google.com/cdn/docs/support),
and on [this website](https://mobile.lemonde.fr/pixels/article/2018/05/23/qu-est-ce-que-le-protocole-https-que-vient-d-adopter-le-site-du-monde_5303084_4408996.html).

* Escape a dot