US47068 fixed disconnect for socketio.Client. Fixes stuck taurus sess…

[jaroslavlibak]

• socketio.Client has a bug when it cannot shut down its resources when SocketIO connection has been established and then lost. It results in reconnect thread that is not shut down and causes stuck taurus sessions
• reworked connect and logging when unable to send metrics
• verified locally when happysocks is repeatedly started and stopped with both on and off at the end of taurus session

[codecov]

Codecov Report

Merging #1718 (f257cf9) into master (623297c) will decrease coverage by 0.02%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##           master    #1718      +/-   ##
==========================================
- Coverage   89.62%   89.60%   -0.02%     
==========================================
  Files          70       70              
  Lines       18557    18568      +11     
==========================================
+ Hits        16630    16636       +6     
- Misses       1927     1932       +5     

Impacted Files	Coverage Δ
bzt/modules/blazemeter/blazemeter_reporter.py	92.11% <50.00%> (-0.75%)	⬇️
bzt/bza.py	87.42% <100.00%> (-0.10%)	⬇️

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