https://lgtm.com/rules/10030086/

    - ecl in PX4/Firmware (3a004d13dc13d81403ae3873d5109c0503a4f964): https://github.com/PX4/ecl/commit/a892ececf8490b21aa8917bc243b2bc441af6a87
    - ecl current upstream: https://github.com/PX4/ecl/commit/f95cd4b3584d029c35b288a39180ddf25b2dd004
    - Changes: https://github.com/PX4/ecl/compare/a892ececf8490b21aa8917bc243b2bc441af6a87...f95cd4b3584d029c35b288a39180ddf25b2dd004

    f95cd4b 2019-01-22 Roman - ground effect: removed dependency on local position
7845ff4 2019-01-23 CarlOlsson - EKF: increase wind process noise scaler to 0.5
32ca6f7 2018-10-24 CarlOlsson - ekf: scale wind process noise with low pass filtered height rate
938c8ad 2019-02-04 CarlOlsson - EKF: use hagl estimate if valid for when to trigger yaw reset on takeoff
8b4ae48 2019-03-05 Hamish Willee - README: Fix link to EKF/ECL tuning guide
f0889c1 2019-03-18 Carl Olsson - EKF: fixed some comment typos
6e77b19 2019-03-14 Todd Stellanova - Add DataValidatorGroup tests, add more DataValidator tests (#592)

    - mavlink v2.0 in PX4/Firmware (1c8aeab34d70c2a3ebee4c94397c4aa62c955ec7): https://github.com/mavlink/c_library_v2/commit/b32bd3f004b971c03711617c79e5dc67e720e864
    - mavlink v2.0 current upstream: https://github.com/mavlink/c_library_v2/commit/171c83700c6318af9ffb4a7ee733567b55a14543
    - Changes: https://github.com/mavlink/c_library_v2/compare/b32bd3f004b971c03711617c79e5dc67e720e864...171c83700c6318af9ffb4a7ee733567b55a14543

    - sitl_gazebo in PX4/Firmware (d36c0e13): https://github.com/PX4/sitl_gazebo/commit/2f0070ec6c29c34b9bae10ac03224775627c338a
    - sitl_gazebo current upstream: https://github.com/PX4/sitl_gazebo/commit/e0dfe7ea45c849e676c201b7428bf8df975d4790
    - Changes: https://github.com/PX4/sitl_gazebo/compare/2f0070ec6c29c34b9bae10ac03224775627c338a...e0dfe7ea45c849e676c201b7428bf8df975d4790

    e0dfe7e 2019-03-11 Jannik Beyerstedt - Fix compiler error with openCV (C++11) on macOS

 - otherwise use default nsh

* Support for armv7-m_dcache control via parameter

  The FORCE_F7_DCACHE parameter can be set to
   0 - (default) if Eratta exits turn dcache off else leave it on
   1 -  Force it off
   2 -  Force it on

   At boot the system will disable the d-cache if the silicon
   has the 1259864 Data corruption in a sequence of Write-Through
   stores and loads eratta.

   Post nsh script execution the FORCE_F7_DCACHE paramater
   will be used to set the d-cache to the state indicated
   above.

using parameter_update.py followed by a make format

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using parameter_update.py script

using paramter_update.py script

using parameter_update.py script

Parameter update - Add parameter_update.py script used to rename the BlockParam variables with the new strict naming convention

commander: PreflightCheck replace all differential_pressure sensor checks with airspeed checks (#11722)

Signed-off-by: Roman <bapstroman@gmail.com>

This fixes the issue where the  DO_CHANGE_SPEED command was ignored and
the drone always travelled at the MPC_XY_CRUISE velocity.