CI/E2E: commenting for now single_node/bootstrap_from_replayer

We are investigating it in #1591.

Author: dannywillems

.github/workflows/tests.yaml

@@ -528,7 +528,7 @@ jobs:
     strategy:
       matrix:
         test:
-          - single_node
+          # - single_node
           - multi_node_initial_joining
           - multi_node_peer_discovery
           - multi_node_propagate_block

node/testing/tests/single_node.rs

@@ -29,6 +29,7 @@ scenario_test!(
 );
 
 scenario_test!(
+    #[ignore = "investigate failure, see 1591"]
     bootstrap_from_replayer,
     SoloNodeBootstrap,
     SoloNodeBootstrap