Add Cambium Wireless Access Point to dhcp_vendor_class

[modoyle-r7]

Description

Add Cambium Wireless Access Point to dhcp_vendor_class

Notes

Motivation and Context

Improved coverage

How Has This Been Tested?

• ./bin/recog_verify xml/dhcp_vendor_class.xml
• rake tests

Types of changes

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

Checklist:

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

[mkienow-r7]

@modoyle-r7 Would you please update the PR description using the default PR template?

[mkienow-r7]

Thank you for the contribution @modoyle-r7!