profiles/internal/rpc/stream/benchmark: Renames

Rename benchmarks to reflect:
- Security by default (so the insecure ones get called out)
- Remove TLS: Given @mattr-google's upcoming change to switch to NaclBox
  as the default cipher used in VCs, using "TLS" in the name of the
  benchmark didn't make much sense.

Change-Id: I3023773cfed33ab12ce50fc7906452781b8980d3
5 files changed