JSON representation of event stats

[fedekunze]

Closes: #4670

• 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.

• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry: clog add [section] [-t <tag>] [-m <msg>]

• Re-reviewed Files changed in the github PR explorer

---

For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[fedekunze]

New output from make test_sim_app_fast:

{
 "auth": {
  "deduct_fee": {
   "failure": 11,
   "ok": 69
  }
 },
 "bank": {
  "multisend": {
   "failure": 6,
   "ok": 114
  },
  "send": {
   "failure": 113,
   "ok": 1207
  }
 },
 "begin_block": {
  "evicence": {
   "ok": 129
  },
  "signing": {
   "missed": 477,
   "signed": 2141
  }
 },
 "distribution": {
  "set_withdraw_address": {
   "failure": 606
  },
  "withdraw_delegator_reward": {
   "failure": 619,
   "ok": 31
  },
  "withdraw_validator_commission": {
   "failure": 191,
   "ok": 392
  }
 },
 "end_block": {
  "validator_updates": {
   "added": 107,
   "kicked": 114,
   "updated": 733
  }
 },
 "gov": {
  "deposit": {
   "failure": 258,
   "ok": 960
  },
  "submit_proposal": {
   "failure": 39,
   "ok": 142
  }
 },
 "slashing": {
  "unjail": {
   "failure": 1248,
   "ok": 2
  }
 },
 "staking": {
  "begin_redelegate": {
   "failure": 1068,
   "ok": 19
  },
  "begin_unbonding": {
   "failure": 1,
   "ok": 1006
  },
  "create_validator": {
   "failure": 962,
   "ok": 106
  },
  "delegate": {
   "failure": 46,
   "ok": 991
  },
  "edit_validator": {
   "failure": 17,
   "ok": 25
  },
  "no-operation": {
   "failure": 752
  }
 }
}

[fedekunze]

cc: @npinto for your convenience

[codecov]

Codecov Report

Merging #4784 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4784   +/-   ##
=======================================
  Coverage   53.89%   53.89%           
=======================================
  Files         270      270           
  Lines       17230    17230           
=======================================
  Hits         9286     9286           
  Misses       7260     7260           
  Partials      684      684

[mircea-c]

LGTM 👍

[alexanderbez]

ACK but one minor nit

[alexanderbez]

ACK