Minor changes

Copy interfaces before processing in extractor by @nahun in #556
Closes #552 and #575: Add location and power panel to nb_lookup by @rodvand in #599
Fix #562 Change vCPU on Virtual Machine to float by @rodvand in #605
Convert attached_ips generator to a list by @sc68cal in #578
added connected-device API endpoint by @f-kessler in #540
This allows the addition of the parent to an interface. by @ThomasADavis in #604
Fix #555 by making attached_ips subscriptable by @rodvand in #609

Special thanks