Retry options

[fronzbot]

Description:

Adds ability to override default retry properties

Checklist:

• Local tests with tox run successfully PR cannot be meged unless tests pass
• Changes tested locally to ensure platform still works as intended
• Tests added to verify new code works

[codecov]

Codecov Report

Merging #339 into dev will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev     #339      +/-   ##
==========================================
+ Coverage   82.92%   83.01%   +0.09%     
==========================================
  Files           8        8              
  Lines         943      948       +5     
==========================================
+ Hits          782      787       +5     
  Misses        161      161              

Flag	Coverage Δ
#unittests	83.01% <100.00%> (+0.09%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
blinkpy/auth.py	94.83% <100.00%> (+0.17%)	⬆️

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