Server: publish verification data on v1/domain/info

[liamsi]

• add admin client to key-server
• add Public() method to VRF private key
• add GetDomainInfo to proto and key-server

resolves #672

[gdbelvin]

Looks great!

[liamsi]

I'm fixing the integration test and will merge if travis passes.

cc @AMarcedone that is the PR Gary was referring to during the hangout. You should be able to read the key (der encoded) by querying the API with the corresponding URL (see #672)

[AMarcedone]

Awesome @liamsi!
Looking forward to have this merged so I can start testing grpc from Android. In the meantime I will try to deploy my own version.

[codecov-io]

Codecov Report

Merging #722 into master will decrease coverage by 0.59%.
The diff coverage is 9.75%.

@@            Coverage Diff            @@
##           master     #722     +/-   ##
=========================================
- Coverage   53.85%   53.25%   -0.6%     
=========================================
  Files          38       38             
  Lines        3168     3207     +39     
=========================================
+ Hits         1706     1708      +2     
- Misses       1171     1208     +37     
  Partials      291      291

Impacted Files	Coverage Δ
core/crypto/vrf/vrf.go	100% <ø> (ø)	⬆️
core/crypto/vrf/p256/p256.go	75.13% <0%> (-5.68%)	⬇️
integration/testutil.go	65.21% <100%> (+0.25%)	⬆️
core/keyserver/keyserver.go	36.36% <4%> (-3.93%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f1bfcfd...e6a39f0. Read the comment docs.