chore(tls): Install default rustls provider in main (#4083)

* chore(tls): Move rustls into dedicated crate

Signed-off-by: Scott Fleener <[email protected]>

* chore(tls): Remove extraneous provider installs from tests

Signed-off-by: Scott Fleener <[email protected]>

* chore(tls): Install default rustls provider in main

Signed-off-by: Scott Fleener <[email protected]>

---------

Signed-off-by: Scott Fleener <[email protected]>

Author: sfleen

linkerd2-proxy/Cargo.toml

@@ -23,8 +23,6 @@ futures = { version = "0.3", default-features = false }
 kubert-prometheus-tokio = { version = "0.2.0", features = ["rt"] }
 linkerd-app = { path = "../linkerd/app" }
 linkerd-metrics = { path = "../linkerd/metrics" }
-# We don't actually use code from this crate in `main`; it's here only so we can
-# control its feature flags.
 linkerd-rustls = { path = "../linkerd/rustls" }
 linkerd-signal = { path = "../linkerd/signal" }
 num_cpus = "1"

linkerd2-proxy/src/main.rs

@@ -35,6 +35,8 @@ fn main() {
         vendor = BUILD_INFO.vendor,
     );
 
+    linkerd_rustls::install_default_provider();
+
     let mut metrics = linkerd_metrics::prom::Registry::default();
 
     // Load configuration from the environment without binding ports.