Make sure the generic fixed wing types AERT/AETR can arm the ESC.

Fixed Vagrant provisioning

- Added "zip" package needed for build
- Run shell proviosioner as non-privileged (ie. "vagrant") user

Update uavcan_main.cpp

Master uavcan timesync with command line UAVCAN parameter operations

Conflicts:
	src/lib/uavcan
	src/modules/systemlib/print_load_posix.c
	src/modules/uavcannode/module.mk

UAVCAN: using only primary interface for firmware update and node ID allocation

has_key is not available in python > 3.0

Add parameter to limit the maximum brightness of the RGB LED

Poll test

Fix to remove dspal version of signal.h

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

Fixed poll timeout bug

The SIGCONT signal was being ignored by the HRT queue thread so the
usleep was not waking up early to process new work.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

Poll test

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

- changes to allow for multi-uav support