Fix: bootstrap: Improve sync_files_to_disk function (bsc#1219537)

[liangxin1300]

Filter out the files that not exist in local and remote

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.

Project coverage is 69.73%. Comparing base (2402198) to head (270eb99).
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
crmsh/bootstrap.py	81.81%	2 Missing ⚠️

Additional details and impacted files

Flag	Coverage Δ
integration	53.55% <81.81%> (+<0.01%)	⬆️
unit	53.09% <72.72%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
crmsh/bootstrap.py	88.09% <81.81%> (-0.07%)	⬇️

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