Add service call timeout argument in spawner

[tonynajjar]

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.01%. Comparing base (23bd1c3) to head (a495547).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1808      +/-   ##
==========================================
+ Coverage   87.97%   88.01%   +0.03%     
==========================================
  Files         121      121              
  Lines       12403    12404       +1     
  Branches     1105     1105              
==========================================
+ Hits        10912    10917       +5     
+ Misses       1085     1083       -2     
+ Partials      406      404       -2     

Flag	Coverage Δ
unittests	88.01% <100.00%> (+0.03%)	⬆️

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Files with missing lines	Coverage Δ
.../controller_manager/controller_manager_services.py	79.85% <100.00%> (+0.74%)	⬆️
controller_manager/controller_manager/spawner.py	72.65% <100.00%> (+0.43%)	⬆️

... and 1 file with indirect coverage changes

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[christophfroehlich]

LGTM, but please rebase/merge on master and update the release_notes and docs as I've done in this PR.

[tonynajjar]

LGTM, but please rebase/merge on master and update the release_notes and docs as I've done in this PR.

Done. I believe CI is failing not because of this PR

[christophfroehlich]

LGTM, thanks for the follow-up!

[tonynajjar]

I rebased to master and resolved conflicts caused by https://github.com/ros-controls/ros2_control/pull/1790/files. Could you please review @christophfroehlich @saikishor