pass RequestInfo into Authority on search

[bluejekyll]

Fixes: #1613

@moschroe, It took me a while to come back around to this.

This is a first pass at adding the request details to the Authority::search method, but should suffice for the original issue. I do want to extend this for DoH, DoT, and eventually DoQ to allow for client cert validation (of some form), though the TLS protocol may actually require a different method that's not authority based. We'll see.

[codecov]

Codecov Report

Merging #1620 (9e8ea5c) into main (d7aa80f) will decrease coverage by 0.01%.
The diff coverage is 84.21%.

@@            Coverage Diff             @@
##             main    #1620      +/-   ##
==========================================
- Coverage   79.54%   79.53%   -0.01%     
==========================================
  Files         180      180              
  Lines       18095    18098       +3     
==========================================
+ Hits        14392    14393       +1     
- Misses       3703     3705       +2     

[moschroe]

Looks good to me. Provides all the necessary data in search().

[bluejekyll]

@djc, I think this is a pretty simple change.

@moschroe, thanks for confirming. I think we'll want to expand RequestInfo at some point to also include an additional ProtocolInfo but I don't want to do that until I have a specific use case to test it out. My idea there is to use mTLS or similar to support dynamic update better.

[djc]

LGTM, one question.