🐛 #2758 exclusive queue cannot be reacquired

[sanderegg]

What do these changes do?

This PR changes how RabbitMQ queues are declared.
Before PR: queue set as "exclusive" (e.g. (used by only one connection and the queue will be deleted when that connection closes)
After PR: queue is not exclusive

This has the following implication:

• when a webserver is restarted, for about 5-10 seconds it is a 2nd instance and it has issues accessing the queue (as explained here there can be a race condition and client side communication might ensure issues... that is what we are seeing)
• since the queue is not deleted now when the webserver goes down, it could generate issues but I don't see any at the moment since the messages have a TTL of 60000 seconds, so they will be deleted anyhow.

Related issue/s

fixes #2758

How to test

Checklist

[mrnicegyu11]

@sanderegg we could maybe monitor the number of queues using prometheus, there should only be two, right? If they accumulate, we would have to do a cleanup at some point I guess.

[codecov]

Codecov Report

Merging #2780 (02d8fd5) into master (fec7a1f) will increase coverage by 0.0%.
The diff coverage is 100.0%.

@@          Coverage Diff           @@
##           master   #2780   +/-   ##
======================================
  Coverage    78.8%   78.8%           
======================================
  Files         680     680           
  Lines       27101   27101           
  Branches     2633    2633           
======================================
+ Hits        21359   21366    +7     
+ Misses       4998    4992    -6     
+ Partials      744     743    -1     

Flag	Coverage Δ
integrationtests	65.7% <100.0%> (+<0.1%)	⬆️
unittests	74.4% <0.0%> (+<0.1%)	⬆️

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

Impacted Files	Coverage Δ
...simcore_service_webserver/computation_subscribe.py	88.0% <100.0%> (ø)
...simcore_service_webserver/projects/project_lock.py	94.7% <0.0%> (-5.3%)	⬇️
.../director/src/simcore_service_director/producer.py	62.1% <0.0%> (ø)
...ce_webserver/resource_manager/garbage_collector.py	73.5% <0.0%> (+0.8%)	⬆️
...ce_webserver/resource_manager/websocket_manager.py	97.3% <0.0%> (+4.0%)	⬆️
...rvice_datcore_adapter/utils/requests_decorators.py	78.9% <0.0%> (+7.8%)	⬆️