align undeploy flags with deploy command

[moritzraho]

see #156

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

Merging #172 into master will decrease coverage by 1.71%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #172      +/-   ##
==========================================
- Coverage   93.89%   92.17%   -1.72%     
==========================================
  Files          20       20              
  Lines         573      575       +2     
  Branches       71       72       +1     
==========================================
- Hits          538      530       -8     
- Misses         31       40       +9     
- Partials        4        5       +1

Impacted Files	Coverage Δ
src/commands/app/undeploy.js	72.97% <100%> (-27.03%)	⬇️

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