Populate app_fills index for fills

[cbovis]

No description provided.

[codecov]

Codecov Report

Merging #505 (677674f) into master (59c6214) will increase coverage by 0.92%.
The diff coverage is 95.58%.

@@            Coverage Diff             @@
##           master     #505      +/-   ##
==========================================
+ Coverage   59.93%   60.85%   +0.92%     
==========================================
  Files         155      157       +2     
  Lines        2566     2634      +68     
  Branches      278      292      +14     
==========================================
+ Hits         1538     1603      +65     
- Misses        923      926       +3     
  Partials      105      105              

Impacted Files	Coverage Δ
src/constants.js	100.00% <ø> (ø)
src/consumers/index-app-fills/index.js	95.00% <95.00%> (ø)
src/index/index-app-fills.js	95.45% <95.45%> (ø)
src/fills/create-fills.js	100.00% <100.00%> (ø)
src/index/get-index-name.js	42.85% <100.00%> (+6.01%)	⬆️
src/jobs/measure-fills/measure-fill.js	89.58% <100.00%> (+0.45%)	⬆️

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