e2e: wait for all templates

[odeimaiz]

What do these changes do?

e2e: Wait until all templates reach the frontend before starting one.

Related issue/s

How to test

Checklist

[codecov]

Codecov Report

Merging #2299 (ab1c2c7) into master (f133e8d) will increase coverage by 4.5%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master   #2299     +/-   ##
========================================
+ Coverage    67.2%   71.8%   +4.5%     
========================================
  Files         505     505             
  Lines       19856   19856             
  Branches     1948    1948             
========================================
+ Hits        13358   14271    +913     
+ Misses       6082    5113    -969     
- Partials      416     472     +56     

Flag	Coverage Δ
integrationtests	62.1% <ø> (?)
unittests	67.1% <ø> (-0.1%)	⬇️

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

Impacted Files	Coverage Δ
.../director/src/simcore_service_director/producer.py	61.3% <0.0%> (-0.5%)	⬇️
...re_service_webserver/projects/projects_handlers.py	90.2% <0.0%> (+0.3%)	⬆️
...simcore_service_webserver/director/director_api.py	66.6% <0.0%> (+1.3%)	⬆️
.../simcore_service_webserver/projects/projects_db.py	90.7% <0.0%> (+2.5%)	⬆️
...server/src/simcore_service_webserver/groups_api.py	91.6% <0.0%> (+2.5%)	⬆️
.../server/src/simcore_service_webserver/users_api.py	93.9% <0.0%> (+2.5%)	⬆️
...vices/sidecar/src/simcore_service_sidecar/utils.py	78.0% <0.0%> (+4.0%)	⬆️
...es/sidecar/src/simcore_service_sidecar/rabbitmq.py	89.7% <0.0%> (+4.4%)	⬆️
...erver/src/simcore_service_webserver/director_v2.py	79.5% <0.0%> (+4.5%)	⬆️
...rc/simcore_service_director_v2/core/application.py	88.6% <0.0%> (+4.5%)	⬆️
... and 47 more