chore: add --no-diff flag for convert-to-1.0 cmd

[wangyelei]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 16.66667% with 5 lines in your changes missing coverage. Please review.

Project coverage is 41.21%. Comparing base (131c0cf) to head (b0e8117).

Files with missing lines	Patch %	Lines
pkg/cmd/cluster/covert_to_1.0.go	16.66%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #528   +/-   ##
=======================================
  Coverage   41.20%   41.21%           
=======================================
  Files         187      187           
  Lines       25229    25233    +4     
=======================================
+ Hits        10396    10399    +3     
- Misses      13663    13664    +1     
  Partials     1170     1170           

Flag	Coverage Δ
unittests	41.21% <16.66%> (+<0.01%)	⬆️

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