updates to vault api

[drewgonzales360]

Summary

• bugfix: When Nelson attempted to create a vault role in the PKI engine, the json body wasn't being passed. When you make a request without a body, the Vault API will assume all the defaults.
• modified the Vault API defaults a bit to rely on the trust chain instead of the domain. We don't force users to put a domain by default and allow any CName to get put on the certificate.

[codecov-io]

Codecov Report

Merging #250 into master will decrease coverage by 0.02%. The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #250      +/-   ##
==========================================
- Coverage   55.89%   55.86%   -0.03%     
==========================================
  Files         133      133              
  Lines        4394     4396       +2     
  Branches       84       90       +6     
==========================================
  Hits         2456     2456              
- Misses       1938     1940       +2

Impacted Files	Coverage Δ
core/src/main/scala/vault/http/json.scala	29.26% <ø> (ø)	:arrow_up:
core/src/main/scala/vault/op.scala	40% <ø> (ø)	:arrow_up:
core/src/main/scala/Workflow.scala	20.51% <0%> (-0.54%)	:arrow_down:
core/src/main/scala/vault/http/Http4sVault.scala	3.7% <0%> (ø)	:arrow_up:

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[drewgonzales360]

There isn't any activity going on here. Gonna close