fix: fetch module revisions from autocomplete index

[richardzilincikPantheon]

Resolves #789

[codecov[bot]]

Codecov Report

Merging #792 (3fea116) into develop (fc6e8ab) will decrease coverage by 0.02%. The diff coverage is 16.66%.

:exclamation: Current head 3fea116 differs from pull request most recent head ca5e79f. Consider uploading reports for the commit ca5e79f to get more accurate results

@@             Coverage Diff             @@
##           develop     #792      +/-   ##
===========================================
- Coverage    77.74%   77.73%   -0.02%     
===========================================
  Files          110      110              
  Lines        11392    11394       +2     
===========================================
  Hits          8857     8857              
- Misses        2535     2537       +2     

Impacted Files	Coverage Δ
api/views/yang_search/yang_search.py	14.25% <9.09%> (-0.06%)	:arrow_down:
jobs/celery.py	90.04% <100.00%> (ø)