cmd: use SetIndent(2) to dump yaml subcommands

[zchee]

Use SetIndent(2) to dump yaml subcommands.

Normally the indent for yaml is 2 indent, as does the CircleCI document.

[codecov[bot]]

Codecov Report

Merging #677 (03eb272) into master (263902a) will increase coverage by 0.08%. The diff coverage is 69.76%.

@@            Coverage Diff             @@
##           master     #677      +/-   ##
==========================================
+ Coverage   27.37%   27.45%   +0.08%     
==========================================
  Files          41       41              
  Lines        4523     4509      -14     
==========================================
  Hits         1238     1238              
+ Misses       3134     3129       -5     
+ Partials      151      142       -9     

Impacted Files	Coverage Δ
cmd/config.go	31.48% <16.66%> (ø)
cmd/orb.go	13.78% <27.27%> (+0.06%)	:arrow_up:
cmd/admin.go	57.50% <100.00%> (+2.73%)	:arrow_up:
cmd/build.go	85.71% <100.00%> (ø)
cmd/namespace.go	27.94% <100.00%> (ø)
cmd/query.go	24.32% <100.00%> (ø)
cmd/root.go	51.74% <100.00%> (ø)
cmd/setup.go	49.56% <100.00%> (+2.45%)	:arrow_up:
cmd/step.go	61.90% <100.00%> (ø)
cmd/switch.go	35.71% <100.00%> (ø)
... and 3 more

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[rlegan]

hey! thanks for you pr 😄 I don't really understand why you've commented some bunch of code, which I think does not have any link to the issue and the purpose of this PR ?

by the way, is it possible for you to rebase it ? thank you !