feat: add protocols column to requests_dnf

[kasteph]

No description provided.

[guillaumemichel]

I just ran the ants, and it seems that the protocols aren't added to the denormalized requests table (column is there but empty).

Also wrt normalization there are two tables protocols and protocols_sets like for nebula, which seems good. I guess the code to normalize protocols can also be imported from nebula?

[kasteph]

I just ran the ants, and it seems that the protocols aren't added to the denormalized requests table (column is there but empty).

Yep, I thought it was supposed to be kept empty for now, so I haven't added it at the moment.

[guillaumemichel]

True that we don't need it now. Let's add it later when we need it