Add LFS control

[dsm-kb]

Add ability to turn LFS on / off for repo

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[codecov[bot]]

Codecov Report

Merging #2429 (df9431b) into master (3a432d6) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #2429   +/-   ##
=======================================
  Coverage   98.06%   98.07%           
=======================================
  Files         120      121    +1     
  Lines       10558    10582   +24     
=======================================
+ Hits        10354    10378   +24     
  Misses        140      140           
  Partials       64       64           

Impacted Files	Coverage Δ
github/repos_lfs.go	100.00% <100.00%> (ø)

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[dsm-kb]

Thank you @gmlewis for the LGTM :-)

[gmlewis]

Thank you, @raynigon ! Merged.