Disable some S3 tests of their VCR taping where they fail for known issues

[yarikoptic]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.07% ⚠️

Comparison is base (5b69f70) 90.74% compared to head (98f176d) 90.68%.
Report is 12 commits behind head on maint.

Additional details and impacted files

@@            Coverage Diff             @@
##            maint    #7467      +/-   ##
==========================================
- Coverage   90.74%   90.68%   -0.07%     
==========================================
  Files         325      325              
  Lines       43407    43420      +13     
==========================================
- Hits        39390    39375      -15     
- Misses       4017     4045      +28     

Files Changed	Coverage Δ
datalad/downloaders/tests/test_s3.py	48.63% <100.00%> (-2.73%)	⬇️

... and 12 files with indirect coverage changes

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[yarikoptic]

sample failing tests on travis are unrelated:

=========================== short test summary info ============================
FAILED ../datalad/customremotes/tests/test_archives.py::test_basic_scenario - datalad.runner.exception.CommandError: CommandError: 'git -c diff.ignoreSubmodules=none -c core.quotepath=false annex get -c annex.retry=3 --json --json-error-messages --json-progress -c annex.dotfiles=true -- ' |;&%b5{}'"'"'"<>ΔЙקم๗あ .dbtc '' failed with exitcode 1 under /tmp/datalad_temp_tree_test_basic_scenario6k4ahijq [info keys: stdout_json]
> from datalad-archives...
from datalad-archives...
from datalad-archives...
Unable to access these remotes: datalad-archives
  Failed to fetch any archive containing MD5E-s3--202cb962ac59075b964b07152d234b70. Tried: ['MD5E-s142--170b63d398cfbb66a3b561073c6a566f.tar.gz']
  Failed to fetch any archive containing MD5E-s3--202cb962ac59075b964b07152d234b70. Tried: ['MD5E-s142--170b63d398cfbb66a3b561073c6a566f.tar.gz', 'MD5E-s142--170b63d398cfbb66a3b561073c6a566f.tar.gz']
  Failed to fetch any archive containing MD5E-s3--202cb962ac59075b964b07152d234b70. Tried: ['MD5E-s142--170b63d398cfbb66a3b561073c6a566f.tar.gz', 'MD5E-s142--170b63d398cfbb66a3b561073c6a566f.tar.gz'] [err: 'git-annex: get: 1 failed']
FAILED ../datalad/customremotes/tests/test_archives.py::test_annex_get_from_subdir - datalad.runner.exception.CommandError: CommandError: 'git annex drop -- ' |;&%b5{}'"'"'"<>ΔЙקم๗あ .datc '' failed with exitcode 1
FAILED ../datalad/tests/test_archives.py::test_decompress_file[None] - assert False
FAILED ../datalad/tests/test_archives.py::test_decompress_file[strip] - assert False
FAILED ../datalad/tests/test_archives.py::test_ExtractedArchive - AssertionError: /tmp/datalad_temp_d0b4e3b649_szuv9hkc/ |;&%b5{}'"<>ΔЙקم๗あ .dbtc / |;&%b5{}'"<>ΔЙקم๗あ .datc  must exist

[yarikoptic-gitmate]

PR released in 0.19.3