Add service call timeout argument in spawner (backport #1808)

[mergify]

This PR exposes the call_timeout of the spawner to be optionally set by the user

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This is an automatic backport of pull request #1808 done by Mergify.

[mergify]

Cherry-pick of 41d7393 has failed:

On branch mergify/bp/humble/pr-1808
Your branch is up to date with 'origin/humble'.

You are currently cherry-picking commit 41d7393.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   controller_manager/controller_manager/spawner.py

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   controller_manager/controller_manager/controller_manager_services.py
	both modified:   controller_manager/doc/userdoc.rst
	both modified:   doc/release_notes.rst

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.93%. Comparing base (38a5600) to head (298cffa).
Report is 1 commits behind head on humble.

Additional details and impacted files

@@            Coverage Diff             @@
##           humble    #1886      +/-   ##
==========================================
- Coverage   62.95%   62.93%   -0.02%     
==========================================
  Files         109      109              
  Lines       12493    12495       +2     
  Branches     8481     8480       -1     
==========================================
- Hits         7865     7864       -1     
- Misses        845      847       +2     
- Partials     3783     3784       +1     

Flag	Coverage Δ
unittests	62.93% <100.00%> (-0.02%)	⬇️

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

Files with missing lines	Coverage Δ
.../controller_manager/controller_manager_services.py	81.81% <100.00%> (ø)
controller_manager/controller_manager/spawner.py	69.85% <100.00%> (+0.44%)	⬆️

... and 1 file with indirect coverage changes

[mergify]

This pull request is in conflict. Could you fix it @bmagyar @destogl @christophfroehlich @saikishor?

[saikishor]

LGTM