reindeer: tokio-vsock feature tonic-conn

Summary:
1. Added `tonic-conn` feature of tokio-vsock
2. This caused problems due to version mismtach described [in this post](https://fb.workplace.com/groups/rust.language/posts/27494647173490537)
3. Relaxed tonic dependency version [in the upstream](rust-vsock/tokio-vsock#53)
4. Now waiting for upstream to release 0.6.1 or higher. So, pointing Cargo.toml at a specific commit in the meanwhile

Differential Revision: D66719971

fbshipit-source-id: dc5587769877d07cd3bbccbb6faa1be01d6ad1db

Cargo.toml

@@ -14,6 +14,7 @@ perf-event-open-sys = { version = "4.0", git = "https://github.com/krallin/perf-
 plexi-core = { git = "https://github.com/haochenuw/plexi", rev = "a0326d9802a594ca5382b075620135607e1cdb23" }
 pyo3-build-config = { package = "pyo3-build-config", version = "0.21.2", git = "https://github.com/fbsource/pyo3", rev = "ff94a09031cc29d88d57ae3c846e5b871497aeb9" }
 quickcheck = { git = "https://github.com/jakoschiko/quickcheck", rev = "6ecdf5bb4b0132ce66670b4d46453aa022ea892c" }
+tokio-vsock = { git = "https://github.com/rust-vsock/tokio-vsock", rev = "ae7a7843bf00bd72794ac912ae9504cc1378da7c" }
 tracing-attributes = { git = "https://github.com/tokio-rs/tracing.git", rev = "70a867877d5232b686d5fd70bbb4cbf37f4b38c6" }
 uefisettings = { git = "https://github.com/linuxboot/uefisettings", rev = "f16daed1d2bd1216204fd24e876c6477d03aebb3" }
 uefisettings_backend_thrift = { git = "https://github.com/linuxboot/uefisettings", rev = "f16daed1d2bd1216204fd24e876c6477d03aebb3" }