Use TLS for sonar protocol on android
Use TLS for sonar protocol on android

Summary:
* Start secure and insecure rsocket servers.
* Apps that already know the sonar CA cert can connect securely.
* Apps that don't will connect insecurely, and sonar will deploy it's CA to them through a trusted channel.
* The trusted channel in android's case is adb.
* For iOS, this will be peertalk

Reviewed By: emilsjolander

Differential Revision: D7934025

fbshipit-source-id: bdbfdefddc74e9255b5c8192d68ede89eae85fcb

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