Allows sensor to properly initialize when plugin is used in a model.

[rolker]

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[rolker]

This allows #35 to work

[woensug-choi]

@hmoyen I was trying demo launches on this PR to approve. But some worlds and models in Gazebo Community Meeting (Nov, 26) slides didn't work (not included in ROS2 branch, e.g. dave_ocean_waves_sonar_integrated) I guess this PR is good to go once all below demo launches work without any problem.

• ros2 launch dave_multibeam_sonar_demo multibeam_sonar_demo.launch.py
• ros2 launch dave_demos dave_sensor.launch.py namespace:=blueview_p900 world_name:=dave_ocean_waves_sonar_integrated paused:=false x:=22.5 y:=-4 z:=-15 pitch:=0.2 yaw:=3.14
• ros2 launch dave_demos dave_robot.launch.py z:=-10 x:=5 namespace:=bluerov2_heavy world_name:=dave_ocean_waves_sonar paused:=false

[hmoyen]

@hmoyen I was trying demo launches on this PR to approve. But some worlds and models in Gazebo Community Meeting (Nov, 26) slides didn't work (not included in ROS2 branch, e.g. dave_ocean_waves_sonar_integrated) I guess this PR is good to go once all below demo launches work without any problem.

* [x]  ros2 launch dave_multibeam_sonar_demo multibeam_sonar_demo.launch.py

* [ ]  ros2 launch dave_demos dave_sensor.launch.py namespace:=blueview_p900 world_name:=dave_ocean_waves_sonar_integrated paused:=false x:=22.5 y:=-4 z:=-15 pitch:=0.2 yaw:=3.14

* [ ]  ros2 launch dave_demos dave_robot.launch.py z:=-10 x:=5 namespace:=bluerov2_heavy world_name:=dave_ocean_waves_sonar paused:=false

Hey! I pulled the branch and the demos seem to be working for me (as long as they are included in the models folder, like in the sonar-demo branch). What error did you encounter?

[woensug-choi]

@hmoyen Just didn't know where to find those model files. I see them at sonar-demo :D