Decrease log clutter from tcpserver/session

[jiivan]

Logs are often spammed with non-essential info:

2020-01-03 11:59:27 INFO     golem.network.transport.session     Received disconnect message. reason=ProtocolVersion, address=35.158.160.231:40103 
2020-01-03 11:59:28 INFO     golem.network.transport.tcpserver   Connecting to peer. node='ImALumberJack'(839b6556..3adb9cba), adresses=['35.158.160.231:40103'] 
2020-01-03 11:59:29 INFO     golem.network.transport.tcpserver   Connecting to peer. node='SPLYGolem-002'(d5134615..2c67ab42), adresses=['45.73.63.50:40103'] 
2020-01-03 11:59:29 INFO     golem.network.transport.session     Received disconnect message. reason=ProtocolVersion, address=35.158.160.231:40103 
2020-01-03 11:59:30 INFO     golem.network.transport.tcpserver   Connecting to peer. node='ImALumberJack'(839b6556..3adb9cba), adresses=['35.158.160.231:40103'] 
2020-01-03 11:59:31 INFO     golem.network.transport.tcpserver   Connecting to peer. node='SPLYGolem-002'(d5134615..2c67ab42), adresses=['45.73.63.50:40103'] 
2020-01-03 11:59:31 INFO     golem.network.transport.session     Received disconnect message. reason=ProtocolVersion, address=35.158.160.231:40103 
2020-01-03 11:59:32 INFO     golem.network.transport.tcpserver   Connecting to peer. node='ImALumberJack'(839b6556..3adb9cba), adresses=['35.158.160.231:40103'] 

[codecov]

Codecov Report

Merging #5033 into b0.22 will decrease coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            b0.22    #5033      +/-   ##
==========================================
- Coverage   90.08%   90.07%   -0.01%     
==========================================
  Files         234      234              
  Lines       21965    21965              
==========================================
- Hits        19787    19786       -1     
- Misses       2178     2179       +1

[shadeofblue]

looks okay