set some flaky tests as #[ignore] (#1432)

Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/1432

src/garage/tests/k2v/item.rs

@@ -11,6 +11,7 @@ use http_body_util::BodyExt;
 use hyper::{Method, StatusCode};
 
 #[tokio::test]
+#[ignore = "flaky"]
 async fn test_items_and_indices() {
 	let ctx = common::context();
 	let bucket = ctx.create_bucket("test-k2v-item-and-index");

src/net/test.rs

@@ -13,12 +13,14 @@ use crate::peering::*;
 use crate::NodeID;
 
 #[tokio::test(flavor = "current_thread")]
+#[ignore = "flaky"]
 async fn test_with_basic_scheduler() {
 	pretty_env_logger::init();
 	run_test(19980).await;
 }
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 4)]
+#[ignore = "flaky"]
 async fn test_with_threaded_scheduler() {
 	run_test(19990).await;
 }