Add few warning flags to error

[saikishor]

Applying similar flags as done in the ros2_control : ros-controls/ros2_control#1181

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (f14396c) 48.00% compared to head (6000e95) 47.82%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #961      +/-   ##
==========================================
- Coverage   48.00%   47.82%   -0.19%     
==========================================
  Files          41       41              
  Lines        3862     3862              
  Branches     1816     1816              
==========================================
- Hits         1854     1847       -7     
- Misses        745      754       +9     
+ Partials     1263     1261       -2     

Flag	Coverage Δ
unittests	47.82% <0.00%> (-0.19%)	⬇️

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

Files	Coverage Δ
...include/joint_trajectory_controller/tolerances.hpp	55.00% <0.00%> (ø)
pid_controller/src/pid_controller.cpp	47.74% <0.00%> (ø)

... and 1 file with indirect coverage changes

[christophfroehlich]

LGTM when linters are happy

[saikishor]

@christophfroehlich Thank you. The linters are fixed now.