Addition of FWUPD_DEVICE_FLAG_REQUIRE_AC Flag to fu-plugin-test.c
Addition of FWUPD_DEVICE_FLAG_REQUIRE_AC Flag to fu-plugin-test.c

This commit is a solution to the issue filed at
https://github.com/fwupd/fwupd/issues/3501. It sets a the AC power flag for the
fake webcam device.

fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,hughsie/fwupd