actions: image-partition: add 'gpt_gap' property
actions: image-partition: add 'gpt_gap' property

This is a property allowing to use 'hacked' GPT with special parted
version: https://repositories.apertis.org/debian/pool/tools/p/parted/
It allows to write boot binary to sector 2 without damaging GPT.

Signed-off-by: Denis Pynkin <3fbf95ee68899518ee8799d35f88c8f7982aa936@collabora.com>

go-debos/debos,d4s/debos