[roll] Roll fuchsia [netemul] Make ping::Node work per IP version

Refactor the `ping` module such that IPv4 and IPv6 addresses are
stored separately. If a source node does not have addresses for an
IP version, it will skip pinging destination nodes in said IP version.

Add functions to the interfaces module:
- `wait_for_v4_and_v6_ll` for waiting for one IPv4 address and one IPv6
  link-local address (choice is arbitrary); and
- `wait_for_v6_ll` for waiting for one IPv6 link-local address (choice
  is arbitrary).

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/613984
Original-Revision: 3fe290c5b6633161a0e64da4b7f306ed1f14585a
GitOrigin-RevId: 5280beaa5b65b3afef46120007c806c0189bc07d
Change-Id: Iab1c35916306dfba3c75f1a91bcb7487fce1d4cd
diff --git a/stem b/stem
index bc69fac..766728f 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="fdd54a72071e7154e9419476c0f29064bc2d155f"/>
+             revision="3fe290c5b6633161a0e64da4b7f306ed1f14585a"/>
   </projects>
   <hooks>
     <hook name="install-environment"