fix unit test with old versions of boost

gcontini

2020-02-10 205c71575c272a685011c641a33d26cf66cf60a0

 test/library/os/network_test.cpp

@@ -23,7 +23,7 @@
   FUNCTION_RETURN result = getAdapterInfos(adapters);
   ExecutionEnvironment exec_env;
   if (result != FUNC_RET_OK && exec_env.is_docker()) {
      BOOST_TEST_INFO("detected docker environment, not having network interfaces is normal here");
      BOOST_TEST_MESSAGE("detected docker environment, not having network interfaces is normal here");
      return;
   }
   BOOST_CHECK_EQUAL(result, FUNC_RET_OK);