Enhance recog specs to ensure that examples correctly match in order

This ensures that if fp1 and fp2 are similar, and fp2 has an example
that matches both fp1 and fp2, that the spec will fail.
Correct ordering of JUNOS NTP readvar fingerprint
When failing because of a regex mismatch, show the example that failed
Remove duplicate and less flexible fingerprint for Dell MFPs
Reorder fingerprints for Windows 7/8
Merge pull request #5 from rapid7/CONTENT-6127

Enhance Recog unit tests to ensure correct match order, fix misordered fingerprints and examples