fix: pass configured timeout to HTTP client

[bednar]

Closes #221

Proposed Changes

Correctly pass configured timeout into urllib3.

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• pytest tests completes successfully
• Commit messages are in semantic format
• Sign CLA (if not already signed)

[codecov]

Codecov Report

Merging #222 (f504d0b) into master (2870071) will increase coverage by 0.10%.
The diff coverage is 87.50%.

@@            Coverage Diff             @@
##           master     #222      +/-   ##
==========================================
+ Coverage   90.64%   90.75%   +0.10%     
==========================================
  Files          26       26              
  Lines        2010     2012       +2     
==========================================
+ Hits         1822     1826       +4     
+ Misses        188      186       -2     

Impacted Files	Coverage Δ
influxdb_client/rest.py	83.45% <80.00%> (+1.64%)	⬆️
influxdb_client/client/influxdb_client.py	99.27% <100.00%> (ø)
influxdb_client/configuration.py	84.44% <100.00%> (+0.17%)	⬆️

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