cannot filter based on details.txt fields

[jupe]

Looks that filter_function doesn't work with fields that is declared in details.txt.
See example:

import mbed_lstools
mbeds = mbed_lstools.create()
print mbeds.list_mbeds(
    read_details_txt=True,
    filter_function=lambda m: m.get('daplink_automation_allowed') == '0')
# []
print mbeds.list_mbeds(
    read_details_txt=True,
    filter_function=lambda m: m.get('platform_name') == 'K64F')

# [{.."daplink_automation_allowed": "0"..}]