test(isolation): initialize TLS provider per process

Signed-off-by: Drew Newberry <anewberry@nvidia.com>

Author: drew

crates/openshell-isolation-interface/src/remote.rs

@@ -1075,6 +1075,7 @@ mod tests {
     }
 
     fn test_certificate(name: &str) -> TestCertificate {
+        let _ = rustls::crypto::ring::default_provider().install_default();
         let certified =
             generate_simple_self_signed(vec![name.to_string()]).expect("generate test certificate");
         let certificate = certified.cert.der().clone();