Add a .gitignore file to ./deployment
Add a .gitignore file to ./deployment

Ignores a file generated by Terraform and Terraform's cache.

google/trillian,gdbelvin/trillian,gdbelvin/trillian,RJPercival/trillian,gdbelvin/trillian,AlCutter/trillian,google/trillian,AlCutter/trillian,RJPercival/trillian