GET /api/devices/{dev_eui}/activation returns incorrect "appSKey"

(1) GET /api/devices/{dev_eui}/activation returns correct “nwkSEncKey”,
but INCORRECT “appSKey”.

(2) The “app_s_key” in the table device_activation of database loraserver_as is correct.

(3) The “nwk_s_enc_key” in the table device_activation of database loraserver_ns is correct.

Please report bugs to https://github.com/brocaar/lora-app-server, including details how to reproduce the issue.