feat(terraform-importer): remote backend

[smintz]

This change is 

[codecov]

Codecov Report

Merging #186 (a6d8c47) into master (adf4689) will increase coverage by 0.33%.
The diff coverage is 80.76%.

@@            Coverage Diff             @@
##           master     #186      +/-   ##
==========================================
+ Coverage   64.05%   64.39%   +0.33%     
==========================================
  Files          15       15              
  Lines        1252     1275      +23     
==========================================
+ Hits          802      821      +19     
- Misses        375      377       +2     
- Partials       75       77       +2     

Impacted Files	Coverage Δ
importers/terraform_importer/command.go	0.00% <0.00%> (ø)
importers/terraform_importer/terraform_importer.go	95.65% <84.00%> (-1.87%)	⬇️

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