Delayed diagnostics startup and maintenance upgrades

[pcrespov]

What do these changes do?

• upgrades package requirements
• enable postgres-database CI testing
• Fixes on new linter error: raise-missing-from and super-with-arguments
• review and cleanup of fixtures in webserver tests :
  • reduce redundancy (reuse helpers from pytest-simcore)
  • classify fixtures
  • share common fixtures
• enhance servicelib.logged_gathered and added testing
• webserver delays activation of diagnosis. This will avoid restarting due to delays produced upon startup (default delay set to 1 min)

Related issue number

follows from needs of #1724

[codecov]

Codecov Report

Merging #1741 into master will decrease coverage by 0.6%.
The diff coverage is 47.2%.

@@           Coverage Diff            @@
##           master   #1741     +/-   ##
========================================
- Coverage    72.5%   71.9%   -0.7%     
========================================
  Files         279     302     +23     
  Lines       11336   11691    +355     
  Branches     1249    1266     +17     
========================================
+ Hits         8225    8407    +182     
- Misses       2767    2942    +175     
+ Partials      344     342      -2     

Flag	Coverage Δ
#integrationtests	57.0% <14.2%> (+<0.1%)	⬆️
#unittests	66.0% <45.0%> (-0.5%)	⬇️

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Impacted Files	Coverage Δ
...kages/service-library/src/servicelib/monitoring.py	0.0% <ø> (ø)
...ckages/service-library/src/servicelib/resources.py	0.0% <0.0%> (ø)
...src/simcore_service_api_server/api/routes/users.py	48.0% <0.0%> (ø)
...imcore_service_api_server/services/remote_debug.py	50.0% <0.0%> (ø)
...src/simcore_service_catalog/api/routes/services.py	26.0% <0.0%> (ø)
...talog/src/simcore_service_catalog/core/settings.py	93.3% <0.0%> (ø)
...src/simcore_service_catalog/models/domain/group.py	100.0% <ø> (ø)
...c/simcore_service_catalog/services/remote_debug.py	37.5% <0.0%> (ø)
.../director/src/simcore_service_director/producer.py	60.1% <0.0%> (-0.3%)	⬇️
...rc/simcore_service_director/rest/node_validator.py	72.0% <0.0%> (ø)
... and 51 more

[sanderegg]

please go in