check service overload at health entrypoint

[pcrespov]

What do these changes do?

Introduces minimal diagnostics to invalidate healthcheck entrypoint and restart weberver automaticaly.

• servicelib.monitor_slow_callbacks: hooks look event handler and registers an incident when there is a slow callback
• webserver new diagnostics modules that keeps track of incidents
• webserver healthcheck now returns 503 when it is overloaded to long-delayed callbacks. Then swarm will restart the webserver.

Got complicated because of the following UPGRADES in webserver service

• requirements
  • Fixes due to changes in traferet 2.0.2
• Dockerfile (from alpine to debian)
  • docker/*sh scripts
  • fix pip in editable mode MUST NOT produce root folders in mounted volumes

How to test

cd package/service-library
make install-dev
make tests

cd ../services/web/server
make install-dev
make tests-unit

Checklist

• Did you change any service's API? Then make sure to bundle document and upgrade version (make openapi-specs, git commit ... and then make version-*)
• Unit tests for the changes exist
• Runs in the swarm
• Documentation reflects the changes
• New module? Add your github username to .github/CODEOWNERS

[codecov]

Codecov Report

Merging #1401 into master will increase coverage by 0.22%.
The diff coverage is 93.2%.

@@            Coverage Diff             @@
##           master    #1401      +/-   ##
==========================================
+ Coverage   70.52%   70.75%   +0.22%     
==========================================
  Files         222      225       +3     
  Lines        8818     8914      +96     
  Branches      968      979      +11     
==========================================
+ Hits         6219     6307      +88     
- Misses       2322     2324       +2     
- Partials      277      283       +6

Flag	Coverage Δ
#integrationtests	57.19% <52.08%> (-0.05%)	⬇️
#unittests	65.32% <93.2%> (+0.28%)	⬆️

Impacted Files	Coverage Δ
packages/simcore-sdk/src/simcore_sdk/config/s3.py	0% <ø> (ø)	⬆️
.../server/src/simcore_service_webserver/db_config.py	100% <ø> (ø)	⬆️
...r/src/simcore_service_webserver/socketio/config.py	92.3% <ø> (ø)	⬆️
...r/src/simcore_service_webserver/director/config.py	100% <ø> (ø)	⬆️
packages/service-library/src/servicelib/tracing.py	0% <ø> (ø)	⬆️
...rver/src/simcore_service_webserver/login/config.py	100% <ø> (ø)	⬆️
...rver/src/simcore_service_webserver/email_config.py	100% <ø> (ø)	⬆️
...kages/simcore-sdk/src/simcore_sdk/config/rabbit.py	0% <ø> (ø)	⬆️
...er/src/simcore_service_webserver/catalog_config.py	91.66% <ø> (ø)	⬆️
...r/src/simcore_service_webserver/activity/config.py	100% <ø> (ø)	⬆️
... and 16 more

---

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[pcrespov]

Splits in PR #1406 and yet another with upgrades of Dockerfile and requirements coming later

[pcrespov]

Splits in PR #1406 and yet another with upgrades of Dockerfile and requirements coming later