Add buffer size setting to the Telnet component, closes #1114

[zdimension]

Fixes #1114

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1204c26) 56.5% compared to head (a435bf0) 56.5%.
Report is 10 commits behind head on master.

❗ Current head a435bf0 differs from pull request most recent head 1da5f7c. Consider uploading reports for the commit 1da5f7c to get more accurate results

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Additional details and impacted files

@@           Coverage Diff            @@
##             master   #1115   +/-   ##
========================================
  Coverage      56.5%   56.5%           
- Complexity     6579    6580    +1     
========================================
  Files           680     680           
  Lines         35565   35571    +6     
  Branches       4802    4800    -2     
========================================
+ Hits          20113   20122    +9     
+ Misses        14242   14239    -3     
  Partials       1210    1210           

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