* Add dynamic configuration feature.
1. Add a test sample as dynamic configuration test app
2. Add dynamic configuration operation for the device twin changes
3. Update the exsting telemetry reporting logic, subscribe the topics in real time.
4. Update the logging with ROS commands.
* Add test case for dynamic configuration
* Update readme
* Update IOT hub connection strings with placeholder
* Fix build issues on Linux.
* Minor update on the readme content
* Remove \r\n from ROS logging API
* Update dynamic_tutorials package infomation
* Update test.launch for parameterization
* Minor update on readme files
* Fix the build break on linux.
* Update processing logic for ros_dynamic_configurations, remove the global variable to make the logic clear.
Amel Hassan
Lou Amadio
bene0818
Sean Yen
Anthony Turner
Microsoft Open Source