Add retries to SCPMover.copy()

[pnuu]

This PR adds retries to the SCPMover.copy() method. Currently there's only retries in creating the connection.

VERY early work.

• Closes #xxxx
• Tests added
• Fully documented
• Add your name to AUTHORS.md if not there already

[TAlonglong]

Yeah I good with thisl.

Is it your intention to drop the timeout to the put function by doing this?

[TAlonglong]

Do you need the break here if you break on success further down?

[pnuu]

I was already pretty tired when writing that, so probably not 😅

[pnuu]

Is it your intention to drop the timeout to the put function by doing this?

I think we can keep the timeout option, too.

[codecov]

Codecov Report

Merging #153 (ea70de1) into main (5149f50) will increase coverage by 0.18%.
The diff coverage is 98.85%.

@@            Coverage Diff             @@
##             main     #153      +/-   ##
==========================================
+ Coverage   88.37%   88.55%   +0.18%     
==========================================
  Files          22       22              
  Lines        4437     4492      +55     
==========================================
+ Hits         3921     3978      +57     
+ Misses        516      514       -2     

Flag	Coverage Δ
unittests	88.55% <98.85%> (+0.18%)	⬆️

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

Impacted Files	Coverage Δ
trollmoves/movers.py	84.84% <98.11%> (+0.96%)	⬆️
trollmoves/server.py	68.83% <100.00%> (+1.02%)	⬆️
trollmoves/tests/test_server.py	100.00% <100.00%> (ø)
trollmoves/dispatcher.py	90.97% <0.00%> (-0.38%)	⬇️
trollmoves/client.py	82.79% <0.00%> (-0.19%)	⬇️

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