Ansible: upgrade, reboot and wait
Fix freeze while waiting

You need to specify a port number when using wait_for. Otherwise, it
burns cpu cycles while waiting for a timeout. Bug!
Need newer requests package

2.4.1 fixes a bug where a ProtocolError was not captured and reraised
as a ConnectionError by the requests package.
If no HiSPARC III, work with HiSPARC II