Corrected GoPro Camera Parameters

Corrected the focal lenght to 2.8mm.
Merge pull request #1280 from jmachuca77/master

Corrected GoPro Camera Parameters
Use sysid and compid from mavlink heartbeat to communicate
Use target_system and target_component instead
UnitTests: target component and system should not be tested on the ItemTest
Merge pull request #1282 from DroidPlanner/sysid

Use systemid and componentid received from drone