[SPARK-3149] Connection establishment information is not enough.

Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>

Closes #2060 from sarutak/SPARK-3149 and squashes the following commits:

1cc89af [Kousuke Saruta] Modified log message of accepting connection

(cherry picked from commit c1ba4cd6b4db22a9325eee50dc40a78593a10de1)
Signed-off-by: Josh Rosen <joshrosen@apache.org>