aoetools: new package

aoetools: new package

The aoetools are programs for users of the ATA over Ethernet (AoE)
network storage protocol, a simple protocol for using storage over an
ethernet LAN.

Tested on Beaglebone Black.

Build tested with test-pkg.

Signed-off-by: Sergio Prado <sergio.prado@e-labworks.com>
[Thomas:
 - fix check-package warnings
 - use SPDX license code, GPL-2.0
 - use github helper
 - pass TARGET_CONFIGURE_OPTS instead of just CC]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>