Add ping performance test

[sanderegg]

What do these changes do?

• improves usage of the locust.io perfomance tool
• created an aggressive test for pinging deployments

the test simulates 100 users calling 10x the root of the osparc platform and 1x the /v0/health endpoint for 1 minute.
the test fails if the average response time is above 200ms and if the failure rate is above 1%

my current statistics

• local: 0% failure, the average response time: 44ms with a max at 1098ms, doing about 2122 requests/seconds in total.
• master: 0% failure, the average response time: 79ms with a max at 2124ms, doing about 1198 requests/seconds in total.

Related issue/s

How to test

Checklist

[codecov]

Codecov Report

Merging #2337 (a0b94a3) into master (d9beaae) will decrease coverage by 12.9%.
The diff coverage is n/a.

❗ Current head a0b94a3 differs from pull request most recent head f5b368e. Consider uploading reports for the commit f5b368e to get more accurate results

@@            Coverage Diff            @@
##           master   #2337      +/-   ##
=========================================
- Coverage    63.4%   50.5%   -13.0%     
=========================================
  Files         485     277     -208     
  Lines       18104   10725    -7379     
  Branches     1740     943     -797     
=========================================
- Hits        11485    5418    -6067     
+ Misses       6286    5215    -1071     
+ Partials      333      92     -241     

Flag	Coverage Δ
unittests	50.5% <ø> (-12.9%)	⬇️

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

Impacted Files	Coverage Δ
...es/web/server/src/simcore_service_webserver/log.py	0.0% <0.0%> (-68.0%)	⬇️
...server/src/simcore_service_webserver/groups_api.py	21.7% <0.0%> (-67.4%)	⬇️
.../simcore_service_webserver/projects/projects_db.py	19.9% <0.0%> (-66.6%)	⬇️
...re_service_webserver/projects/projects_handlers.py	26.0% <0.0%> (-63.8%)	⬇️
...er/src/simcore_service_webserver/studies_access.py	27.3% <0.0%> (-61.4%)	⬇️
...mcore_service_webserver/login/api_keys_handlers.py	36.7% <0.0%> (-55.9%)	⬇️
..._service_webserver/studies_dispatcher/_projects.py	34.0% <0.0%> (-54.0%)	⬇️
...src/simcore_service_webserver/socketio/handlers.py	32.9% <0.0%> (-49.5%)	⬇️
...src/simcore_service_webserver/groups_exceptions.py	53.3% <0.0%> (-46.7%)	⬇️
...r/src/simcore_service_webserver/socketio/events.py	54.5% <0.0%> (-45.5%)	⬇️
... and 251 more

[GitHK]

I do not see the difference with the above # Usage paragraph

[sanderegg]

make up vs make test

[pcrespov]

Above is up and below is test

[pcrespov]

Above is up and below is test