2.2.0

With this release silk controller and policy server can connect to mySQL database with TLS.

Tested with silk-release v2.2.0

Significant Changes

TLS

• Network policy server can connect to MySQL with TLS
• Silk controller can connect to MySQL with TLS

Chores

• Unpause Toque and verify it works
• We have an acceptance test for search domains
• resurrect our docs for the Policy Server Internal API
• Update pipeline to use upstream cf-deployment
• delete our papertrail account
• do we need to downgrade to Go 1.9?