Feature: client: Add scp multifile support

[sgross-emlix]

Description

Implement -r and [SOURCES...] [DESTINATION] for scp
Collegues requested this feature since it matches the expectation on how to use the widely known scp command.

Checklist

• Documentation for the feature
• PR has been tested

to Target

labgrid@phoebe:~/client$ lgc scp dummy/bar dummy/foo :/tmp
bar                                                                                                                                                                                100%    3     1.2KB/s 00:00
foo                                                                                                                                                                                100%    5     3.3KB/s   00:00
labgrid@phoebe:~/client$ lgc scp -r dummy :/tmp
foo                                                                                                                                                                                100%    5     2.6KB/s   00:00
bar                                                                                                                                                                                100%    3     1.7KB/s   00:00
labgrid@phoebe:~/client$ lgc ssh


BusyBox v1.34.1 () built-in shell (ash)

# cd /tmp
# ls
WebKitCache          bar                  env.yml              foo                  mesa_shader_cache    weston
avahi-daemon.socket  dummy                fontconfig           hsts-storage.sqlite  update-tool.lock
# cd dummy/
# ls
bar  foo

from Target

labgrid@phoebe:~/client$ mkdir rev
labgrid@phoebe:~/client$ lgc scp :/tmp/dummy/foo :/tmp/dummy/bar rev/
foo                                                                                                                                                                                100%    5     1.0KB/s   00:00
bar                                                                                                                                                                                100%    3     0.8KB/s   00:00
labgrid@phoebe:~/client$ lgc scp -r :/tmp/dummy rev
bar                                                                                                                                                                                100%    3     0.4KB/s   00:00
foo    
labgrid@phoebe:~/client$ find rev
rev
rev/dummy
rev/dummy/foo
rev/dummy/bar
rev/foo
rev/bar

• Man pages have been regenerated

[codecov]

Codecov Report

❌ Patch coverage is 12.00000% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.3%. Comparing base (f63dfd7) to head (1cebc8b).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
labgrid/remote/client.py	7.6%	12 Missing ⚠️
labgrid/driver/sshdriver.py	16.6%	10 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #1769   +/-   ##
======================================
  Coverage    45.3%   45.3%           
======================================
  Files         172     172           
  Lines       13517   13510    -7     
======================================
  Hits         6130    6130           
+ Misses       7387    7380    -7     

Flag	Coverage Δ
3.10	45.3% <12.0%> (+<0.1%)	⬆️
3.11	45.3% <12.0%> (+<0.1%)	⬆️
3.12	45.3% <12.0%> (+<0.1%)	⬆️
3.13	45.3% <12.0%> (+<0.1%)	⬆️
3.14	45.3% <12.0%> (+<0.1%)	⬆️
3.9	45.4% <12.0%> (+<0.1%)	⬆️

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[sgross-emlix]

I would like to update tests, but I have no idea where to start. test_sshdriver looks confusing to me