[Linaro-validation] lava device-type overrides in device file

Hello,

How does one do a partial-override of boot_cmds from the device file?

I have a panda and want to use the shipping device-type, except that I need to 'setenv usbethaddr ...' before any of the other commands.

I can fix this by copy/paste'ing the whole boot_cmds_ramdisk section from the device-type into my device file, but what I really want to do to is just use the ones from the device-type with minor modifications (and ensure I get updates to the production device-type when they happen)

Something like this (assuming python ConfigParser style formatting) in the device file would be useful:

boot_cmds_ramdisk = setenv usbethaddr <MAC addr>, %(boot_cmds_ramdisk)s

Is there a good way of doing that?

Kevin