Merge pull request #1299 from helium/madninja/bump_libp2p

bump libp2p to pick up gossip tweaks

Author: madninja

rebar.lock

@@ -86,7 +86,7 @@
  {<<"lager">>,{pkg,<<"lager">>,<<"3.9.2">>},0},
  {<<"libp2p">>,
   {git,"https://github.com/helium/erlang-libp2p.git",
-       {ref,"e7e43396eb9c3fa950a6fb3a5205e02871cb23dd"}},
+       {ref,"059ab21518633b1a99dbf17d6d5ca510d8e50f6f"}},
   0},
  {<<"libp2p_crypto">>,
   {git,"https://github.com/helium/libp2p-crypto.git",