Remove hashdump functionality from enum_osx.

There is a specific hashdump module that is more up-to-date, no need to duplicate
functionality (and code).
Fix hashes being stored as passwords
Fix rspec due to an invalid dns becoming valid
This is more invalid than the other one
geez, glassfish gtf outta there
Land #3671, @wchen-r7's fix for RangeWalker spec
Land #3664, enum_osx dump_hash removal
Land #3670, smb_login private_type fix

[FixRM #8841]