Add WIP feature autentisering av låner på automat.

Also added SIP2 port binding on default port 6001.
NOTE: docker container seems to need deletion and restart to pick up new port binding
due to some docker-py issue?
Also note that SIP2 settings in koha-salt-docker is introduced in
ref: 2b912f16c4f0edee791da5b4956d9b888f8568a7 and adds some requirements to Koha:
- institution must map to existing Koha branch
- automat user needs to exist in Koha and have circulation permissions.