⬆️ 🐛 pylint upgrade and fixes

[pcrespov]

What do these changes do?

This should fix today's issues with the linter tests

• ⬆️ upgrades all repository to pylint 2.10

pylint 2.10.2
astroid 2.7.3
Python 3.8.10 (default, Jun 15 2021, 10:37:55) 
[GCC 9.3.0]

• 🐛 Fixes linter errors/warnings and recommendations (see commit messages)

[codecov]

Codecov Report

Merging #2524 (f9f25c4) into master (7b53350) will decrease coverage by 0.0%.
The diff coverage is 57.1%.

@@           Coverage Diff            @@
##           master   #2524     +/-   ##
========================================
- Coverage    76.6%   76.6%   -0.1%     
========================================
  Files         601     601             
  Lines       22887   22878      -9     
  Branches     2217    2216      -1     
========================================
- Hits        17552   17533     -19     
- Misses       4749    4758      +9     
- Partials      586     587      +1     

Flag	Coverage Δ
integrationtests	67.0% <47.0%> (-0.2%)	⬇️
unittests	70.7% <54.7%> (-0.1%)	⬇️

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

Impacted Files	Coverage Δ
...es/simcore-sdk/src/simcore_sdk/node_ports/_item.py	94.4% <ø> (ø)
...storage/src/simcore_service_storage/application.py	44.1% <ø> (ø)
...erver/src/simcore_service_webserver/computation.py	100.0% <ø> (ø)
.../web/server/src/simcore_service_webserver/email.py	82.3% <ø> (-1.0%)	⬇️
.../src/simcore_service_webserver/scicrunch/models.py	91.1% <0.0%> (ø)
...core_service_webserver/scicrunch/service_client.py	60.0% <0.0%> (ø)
...b/server/src/simcore_service_webserver/security.py	100.0% <ø> (ø)
.../simcore_service_webserver/security_permissions.py	43.7% <0.0%> (ø)
...eb/server/src/simcore_service_webserver/storage.py	100.0% <ø> (ø)
...er/src/simcore_service_webserver/login/handlers.py	87.8% <20.0%> (ø)
... and 17 more

[GitHK]

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