[test] wait factoryreset in check-posix-pty (#6529)
[test] wait factoryreset in check-posix-pty (#6529)


jwhui/openthread,openthread/openthread,openthread/openthread,abtink/openthread,srickardti/openthread,jwhui/openthread,srickardti/openthread,jwhui/openthread,openthread/openthread,abtink/openthread,jwhui/openthread,abtink/openthread,openthread/openthread,srickardti/openthread,srickardti/openthread,abtink/openthread