message: athena.Paxos.tests: Adapt logs to `elle::print`.
diff: @@ -688,7 +688,7 @@ ELLE_TEST_SCHEDULED(evict_down_lag_behind)
  // 1 | 1 | 1 | 1 | -> 1
  // | 1:1:1 | 1:1:1 | 1:1:1 |
  // +---------+---------+---------+
  - ELLE_LOG("choose quorum {11, 12} for version 3")
  + ELLE_LOG("choose quorum \\{11, 12\\} for version 3")
  BOOST_CHECK(!make_partial_client().choose(3, Client::Quorum{11, 12}));
  // 11 12 13
  // +---------+---------+---------+
  @@ -798,7 +798,7 @@ namespace quorum_divergence
  // 1 | 1 | 1 | 1 | -> 1
  // | 1:1:1 | 1:1:1 | 1:1:1 |
  // +---------+---------+---------+
  - ELLE_LOG("choose quorum {11,12} for version 2 on server 11 only")
  + ELLE_LOG("choose quorum \\{11, 12\\} for version 2 on server 11 only")
  BOOST_CHECK_THROW(client_1_only.choose(2, Client::Quorum{11, 12}),
  elle::athena::paxos::TooFewPeers);
  // 11 12 13
  @@ -894,9 +894,9 @@ ELLE_TEST_SCHEDULED(partial_state)
  };
  ELLE_LOG("select 0 for version 0")
  BOOST_CHECK(!make_client({true, true, true}).choose(0, 0));
  - ELLE_LOG("select 1 for version 1 on {11, 12}")
  + ELLE_LOG("select 1 for version 1 on \\{11, 12\\}")
  BOOST_CHECK(!make_client({true, true, false}).choose(1, 1));
  - ELLE_LOG("propose 2 for version 2 on {11}")
  + ELLE_LOG("propose 2 for version 2 on \\{11\\}")
  BOOST_CHECK_THROW(make_client({true, false, false}).choose(2, 2),
  elle::athena::paxos::TooFewPeers);
  // 11 12 13
  @@ -910,7 +910,7 @@ ELLE_TEST_SCHEDULED(partial_state)
  // 0 | 0 | 0 | 0 | -> 0
  // | 0:1:1 | 0:1:1 | 0:1:1 |
  // +---------+---------+---------+
  - ELLE_LOG("propose 2 for version 1 on {11, 13}")
  + ELLE_LOG("propose 2 for version 1 on \\{11, 13\\}")
  BOOST_CHECK(!make_client({true, false, true}).choose(1, 2));
  // 11 12 13
  // +---------+---------+---------+
  