Adding Missing DNS CAA Record Classification

[plr0man]

Since missing DNS Certification Authority Authorization (CAA) Resource Record is not specifically addressed in the VRT, it calls for a new entry.

We need to discuss the best classification for this type of issues to provide better transparency for the researchers and consistent triaging guidance.

Potential classification:

Server Security Misconfiguration->Misconfigured DNS->Missing Certification Authority Authorization (CAA) Record (P5)

All feedback is welcome

[csimas1]

The potential classification and P5 scoring look good to me.

[SwayzeSlacks85]

Classification and P5 look good to me.

[EdisK]

Agree with P5.