Log a message containing the URL of the log viewer.
Log a message containing the URL of the log viewer.

This is currently done by the install script, but it is broken for
non-GCE platforms and is better done here, so it will also work for
people who don't use the install script.

cosmo0920/fluent-plugin-google-cloud,GoogleCloudPlatform/fluent-plugin-google-cloud,swalkowski/fluent-plugin-google-cloud,arthurdarcet/fluent-plugin-google-cloud,a-robinson/fluent-plugin-google-cloud,senthilkumar-kj/fluent-plugin-google-cloud,laramiel/fluent-plugin-google-cloud