Add assorted ZTE CPE device web server fingerprint

[mkienow-r7]

Description

Adds HTTP server fingerprint for assorted ZTE CPE device web server.

Motivation and Context

Improved coverage

How Has This Been Tested?

• rake tests
• ./bin/recog_verify

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• I have updated the documentation accordingly (or changes are not required).
• I have added tests to cover my changes (or new tests are not required).
• All new and existing tests passed.

[TomSellers]

I’d say this PR is fine and the only recommendation might be to adjust service.certainty to 0.50 to that other FPs (HTML title, body, favicon, etc) can overrule it reliably.