Add SIP fingerprint matching
Fix expected nmap certainty
Merging upstream back into this recog focused fork
Fix the spec that causes an encoder error
Merge remote-tracking branch 'upstream/pr/58' into feature/recog

Conflicts:
	lib/mdm/host/operating_system_normalization.rb
	spec/app/models/mdm/host_spec.rb
Fix another Encoding bug in specs