crimson/net: unify loggings for message exchange

crimson/net: unify loggings for message exchange

* remove duplicated information in message logs,
  because connection prefix already contains information about:
  "[my_name(my_logic_name) my_addr >> peer_name peer_addr]"
* unify message logs for both v1 and v2;
* continue to use familiar identifiers to highlight message logs:
  - received messages identified by "<== #seq === msg (type)";
  - sent messages identified by "--> #seq === msg (type)";

Signed-off-by: Yingxin Cheng <yingxin.cheng@intel.com>