Update Rusoto credentials helper for warp 0.2

0001-Update-mock-credentials-service-for-warp-0.2.patch

From 2b6318761ca99f26e5d25e5c9ed6cf2f606dcd12 Mon Sep 17 00:00:00 2001
From: James Nugent <james@jen20.com>
Date: Fri, 24 Jan 2020 21:15:53 +0000
Subject: [PATCH] Update mock credentials service for warp 0.2

---
 rusoto/credential_service_mock/Cargo.toml  | 1 +
 rusoto/credential_service_mock/src/main.rs | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/rusoto/credential_service_mock/Cargo.toml b/rusoto/credential_service_mock/Cargo.toml
index 85a17402d..dacb02427 100644
--- a/rusoto/credential_service_mock/Cargo.toml
+++ b/rusoto/credential_service_mock/Cargo.toml
@@ -5,4 +5,5 @@ authors = ["Matthew Mayer <matthewkmayer@gmail.com>"]
 edition = "2018"
 
 [dependencies]
+tokio = { version = "0.2", features = ["macros"] }
 warp = "0.2"
diff --git a/rusoto/credential_service_mock/src/main.rs b/rusoto/credential_service_mock/src/main.rs
index 4a535b8fe..fe84b83ae 100644
--- a/rusoto/credential_service_mock/src/main.rs
+++ b/rusoto/credential_service_mock/src/main.rs
@@ -1,6 +1,7 @@
 use warp::{self, path, Filter};
 
-fn main() {
+#[tokio::main]
+async fn main() {
     let instance_profile_role =
         path!("latest" / "meta-data" / "iam" / "security-credentials").map(|| "testrole");
     let instance_profile_creds =
@@ -20,5 +21,7 @@ fn main() {
         .and(instance_profile_creds)
         .or(instance_profile_role);
 
-    warp::serve(routes).run(([127, 0, 0, 1], 8080));
+    warp::serve(routes)
+        .run(([127, 0, 0, 1], 8080))
+        .await;
 }
-- 
2.25.0