Wrappers should set their local address when connecting to the master

[juliarn]

The wrapper verification works through the comparison of the address of the connected wrapper and the address of the wrapper in the services.json. If a server has multiple public ips, this can lead to issues when trying to connect to the master, because the wrapper doesn't set the local address when connecting to the master, so the ips might not be the same. The wrapper should set the address in the config.yml as its local address.

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