ensure director has started before getting services

[sanderegg]

What do these changes do?

• ensures that the director-v0 is ready for receiving requests before the catalog says he is ready to get the services
  Should fix the instabilities in the CI for at least e2e testing

Related issue/s

How to test

Checklist

[odeimaiz]

👌

[codecov]

Codecov Report

Merging #2609 (96b3fc0) into master (6e67a44) will decrease coverage by 8.6%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #2609      +/-   ##
=========================================
- Coverage    77.0%   68.3%    -8.7%     
=========================================
  Files         631     362     -269     
  Lines       24752   12372   -12380     
  Branches     2430    1257    -1173     
=========================================
- Hits        19069    8456   -10613     
+ Misses       5042    3627    -1415     
+ Partials      641     289     -352     

Flag	Coverage Δ
integrationtests	?
unittests	68.3% <ø> (-3.2%)	⬇️

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

Impacted Files	Coverage Δ
...es/sidecar/src/simcore_service_sidecar/mpi_lock.py	29.6% <0.0%> (-70.4%)	⬇️
...v2/modules/dynamic_sidecar/docker_compose_specs.py	32.6% <0.0%> (-67.4%)	⬇️
...re-sdk/src/simcore_sdk/node_ports/serialization.py	25.0% <0.0%> (-57.4%)	⬇️
...ore_service_director_v2/api/routes/computations.py	33.0% <0.0%> (-54.5%)	⬇️
...tor_v2/modules/dynamic_sidecar/scheduler/events.py	41.5% <0.0%> (-53.6%)	⬇️
...es/sidecar/src/simcore_service_sidecar/executor.py	27.4% <0.0%> (-51.0%)	⬇️
...imcore-sdk/src/simcore_sdk/node_ports/nodeports.py	29.1% <0.0%> (-50.0%)	⬇️
...dynamic_sidecar/docker_service_specs/spec_proxy.py	53.8% <0.0%> (-46.2%)	⬇️
..._director_v2/modules/db/repositories/comp_tasks.py	50.0% <0.0%> (-45.8%)	⬇️
...k/src/simcore_sdk/node_ports_common/filemanager.py	36.7% <0.0%> (-43.8%)	⬇️
... and 309 more