Add AdditionalDialOptions to ConnBuilder

[vprithvi]

Signed-off-by: Prithvi Raj p.r@uber.com

Which problem is this PR solving?

• Resolves Add additional grpc.DialOptions in agent reporter connection builder #3864

Short description of the changes

• Add additional grpc DialOptions, which allow for specifying custom interceptors/etc.

[codecov]

Codecov Report

Merging #3865 (af23ec1) into main (40e5a27) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #3865      +/-   ##
==========================================
- Coverage   97.64%   97.63%   -0.02%     
==========================================
  Files         293      293              
  Lines       17062    17064       +2     
==========================================
  Hits        16660    16660              
- Misses        317      319       +2     
  Partials       85       85              

Impacted Files	Coverage Δ
cmd/agent/app/reporter/grpc/builder.go	95.31% <100.00%> (+0.15%)	⬆️
pkg/config/tlscfg/cert_watcher.go	92.55% <0.00%> (-2.13%)	⬇️

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