node: feature flag for legacy p2p support (#6056)

test/e2e/docker/Dockerfile

@@ -27,6 +27,7 @@ RUN cd test/e2e && make app && cp build/app /usr/bin/app
 WORKDIR /tendermint
 VOLUME /tendermint
 ENV TMHOME=/tendermint
+ENV TM_LEGACY_P2P=true
 
 EXPOSE 26656 26657 26660 6060
 ENTRYPOINT ["/usr/bin/entrypoint"]

test/e2e/runner/rpc.go

@@ -71,8 +71,10 @@ func waitForNode(node *e2e.Node, height int64, timeout time.Duration) (*rpctypes
 	if err != nil {
 		return nil, err
 	}
+
 	ctx, cancel := context.WithTimeout(context.Background(), timeout)
 	defer cancel()
+
 	for {
 		status, err := client.Status(ctx)
 		switch {