Master/plc-connector: Reads data from PLCs of different vendors, processes it and saves it to different kinds of databases

jm-hsa 51f8668414 init		2 anni fa
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balluff	51f8668414 init	2 anni fa
rockwell	51f8668414 init	2 anni fa
siemens	51f8668414 init	2 anni fa
common.py	51f8668414 init	2 anni fa
dummy.py	51f8668414 init	2 anni fa
replay_influxdb.py	51f8668414 init	2 anni fa