BloodHound & hash_spider fixes

[Marshall-Hallenbeck]

• fail out right away if BloodHound is enabled and authentication fails to the BH API or if the URL isn't available
• fix old db function call for hosts in hash_spider; fixes bug in hash_spider module: 'database' object has no attribute 'get_computers' #221
• update default bloodhound neo4j password, as the docker compose file from them uses a new password by default

[NeffIsBack]

Imo why shouldn't just exit when bloodhound fails to authenticate. In realworld pentests it would maybe be annoying if you get spammed with failed authentication messages, but still better than straight out shutting down your (potentially crucial) command execution over numerous hosts.
In the end it's just a connector trying to assist with bloodhound enumeration.

Rest looks good👍🏼

[Marshall-Hallenbeck]

It throws tons of errors and will cause you to rerun it all again if you don't notice it at first. If we fail out right away they can fix the issue or just turn off Bloodhound integration, a much more simple step than potentially having to reauth against thousands of hosts.

[NeffIsBack]

Well okay, probably not such a big deal anyway.

[NeffIsBack]

Didn't explicitly test but there is not much that could go wrong, LGTM👍🏼