x/authz: simulation audit changes

[aleem1314]

Description

ref: comment
ref: #9114

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #9107 (b12674a) into master (56c0595) will decrease coverage by 0.00%.
The diff coverage is 72.81%.

❗ Current head b12674a differs from pull request most recent head b25d776. Consider uploading reports for the commit b25d776 to get more accurate results

@@            Coverage Diff             @@
##           master    #9107      +/-   ##
==========================================
- Coverage   60.33%   60.33%   -0.01%     
==========================================
  Files         585      591       +6     
  Lines       36774    36955     +181     
==========================================
+ Hits        22188    22295     +107     
- Misses      12621    12685      +64     
- Partials     1965     1975      +10     

Impacted Files	Coverage Δ
x/authz/simulation/operations.go	77.64% <69.41%> (-4.29%)	⬇️
x/authz/simulation/genesis.go	90.90% <88.88%> (+9.09%)	⬆️
client/keys/add.go	62.50% <0.00%> (ø)
version/command.go	83.33% <0.00%> (ø)
telemetry/metrics.go	56.86% <0.00%> (ø)
telemetry/wrapper.go	0.00% <0.00%> (ø)
x/genutil/client/cli/migrate.go	0.00% <0.00%> (ø)
x/auth/legacy/v039/migrate.go	17.14% <0.00%> (ø)
x/auth/legacy/v038/migrate.go	100.00% <0.00%> (ø)
x/genutil/legacy/v036/migrate.go	30.61% <0.00%> (ø)
... and 5 more

[robert-zaremba]

Thanks for updating the codebase. One request change: let's don't confuse grant with Authorizaiton. Left few comments about it.

[lgtm-com]

This pull request introduces 1 alert when merging c95c28f into 025d072 - view on LGTM.com

new alerts:

• 1 for Useless assignment to local variable

[atheeshp]

looks good, can you avoid MustMarshalJSON usage

[aleem1314]

looks good, can you avoid MustMarshalJSON usage

RandomizedGenState not return an error, I think MustMarshalJSON makes sense.

[amaury1093]

@aleem1314 I just added automerge, is that okay?