Fix registration bug

[astrorafael]

2021-06-25T05:37:01+0000 [MQTTProtocol,client] Unhandled Error
Traceback (most recent call last):
File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/python/log.py", line 103, in callWithLogger
raise
File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/python/log.py", line 86, in callWithContext

      File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/python/context.py", line 122, in callWithContext

      File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/python/context.py", line 85, in callWithContext
        self.contexts.pop()
    --- <exception caught here> ---
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/internet/posixbase.py", line 614, in _doReadOrWrite
        def removeAll(self):
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/internet/tcp.py", line 243, in doRead
        else:
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/internet/tcp.py", line 249, in _dataReceived
        if not data:
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/twisted/internet/endpoints.py", line 132, in dataReceived
        """
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/mqtt/client/base.py", line 509, in dataReceived
        self._accumulatePacket(data)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/mqtt/client/base.py", line 332, in _accumulatePacket
        self._processPacket(chunk)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/mqtt/client/base.py", line 358, in _processPacket
        packetDecoder(packet)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/mqtt/client/base.py", line 437, in _handlePUBLISH
        self.state.handlePUBLISH(response)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/mqtt/client/subscriber.py", line 67, in handlePUBLISH
        self.protocol.handlePUBLISH(response)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/mqtt/client/pubsubs.py", line 245, in handlePUBLISH
        self._deliver(response)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/mqtt/client/pubsubs.py", line 484, in _deliver
        self.onPublish(pdu.topic, pdu.payload, pdu.qos, pdu.dup, pdu.retain, pdu.msgId)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/tessdb/mqttservice.py", line 400, in onPublish
        self.handleRegistration(row, now)
      File "/home/rfg/stars4all/lib64/python3.6/site-packages/tessdb/mqttservice.py", line 287, in handleRegistration
        if type(row['calib']) == int:
    builtins.KeyError: 'calib'

2021-06-25T05:37:01+0000 [tessdb.mqttservice.MQTTService#info] Scheduling retry 1 to connect <twisted.internet.endpoints.TCP4ClientEndpoint object at 0x7fb0c4708470> in 8.891547614637352 seconds.
2021-06-25T05:37:01+0000 [mqtt.client.factory.MQTTFactory#info] Stopping factory <mqtt.client.factory.MQTTFactory object at 0x7fb0c47082e8>
2021-06-25T05:37:01+0000 [mqttS#warn] tessdb lost connection with its MQTT broker
2021-06-25T05:37:10+0000 [mqtt.client.factory.MQTTFactory#info] Starting factory <mqtt.client.factory.MQTTFactory object at 0x7fb0c47082e8>
2021-06-25T05:37:10+0000 [mqttS#info] no need to unsubscribe
2021-06-25T05:37:10+0000 [mqttS#info] Subscribing to topics=[('STARS4ALL/register', 2), ('STARS4ALL/+/reading', 2)]
2021-06-25T05:37:10+0000 [mqttS#info] Connected and subscribed to