This makes the flasher work when no flash_method attribute exists on
the args variable, which happens when it is invoked through the
pmbootstrap export --odin command. This is a regression introduced
in b29cc877a7
This fixes#1527
* Rename deviceinfo variable flash_methods to flash_method
* Update pmb.config.deviceinfo_attributes / add sanity check
* Add test case that parses all deviceinfo files
Oliver Smith
Martijn Braam
Daniele Debernardi
Attila Szöllősi