Update to tokio 1.0, bytes 1.0 (#1076)

Co-authored-by: Wim Looman <git@nemo157.com>
Co-authored-by: Paolo Barbolini <paolo@paolo565.org>

tests/support/server.rs

@@ -44,8 +44,7 @@ where
 {
     //Spawn new runtime in thread to prevent reactor execution context conflict
     thread::spawn(move || {
-        let mut rt = runtime::Builder::new()
-            .basic_scheduler()
+        let rt = runtime::Builder::new_current_thread()
             .enable_all()
             .build()
             .expect("new rt");