Use the new reusable helpers methods in hardware diagnostics

[saikishor]

Fixes the compilation issue of the master

Fixes: ros-controls/ros2_controllers#1673
Fixes: ros-controls/ros2_controllers#1672
Fixes: #2221
Fixes: #2220
Fixes: #2219
Fixes: #2218
Fixes: ros-controls/ros2_control_ci#327
Fixes: ros-controls/ros2_control_ci#326
Fixes: ros-controls/ros2_control_ci#325
Fixes: ros-controls/ros2_control_ci#324
Fixes: ros-controls/ros2_control_ci#323
Fixes: #2217

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 88.90%. Comparing base (b2d9bf7) to head (c1f82b5).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
controller_manager/src/controller_manager.cpp	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2216      +/-   ##
==========================================
- Coverage   89.14%   88.90%   -0.24%     
==========================================
  Files         141      142       +1     
  Lines       16168    16463     +295     
  Branches     1386     1427      +41     
==========================================
+ Hits        14413    14637     +224     
- Misses       1227     1273      +46     
- Partials      528      553      +25     

Flag	Coverage Δ
unittests	88.90% <0.00%> (-0.24%)	⬇️

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

Files with missing lines	Coverage Δ
controller_manager/src/controller_manager.cpp	75.20% <0.00%> (-1.32%)	⬇️

... and 3 files with indirect coverage changes

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[christophfroehlich]

Thanks!