fix: change local artifact validation logic from tag to if blocks

[shawnh2]

• disable the SilenceErrors option, so the error from each cmd can surface
• change artifact local fieldfile tag to filepath, only validate the file path, not existence
• check file existence in codebase, and surface more readable error

[codecov-commenter]

Codecov Report

Attention: 11 lines in your changes are missing coverage. Please review.

Comparison is base (42eaaba) 38.21% compared to head (7bb9cd5) 37.91%.

Files	Patch %	Lines
pkg/cluster/baremetal/create.go	0.00%	10 Missing ⚠️
pkg/plugins/manager.go	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #183      +/-   ##
===========================================
- Coverage    38.21%   37.91%   -0.30%     
===========================================
  Files           16       16              
  Lines         1285     1295      +10     
===========================================
  Hits           491      491              
- Misses         689      699      +10     
  Partials       105      105              

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[zyy17]

lgtm