keep mount path in allowed path

[trim21]

Description

Related Issue

close https://github.com/jesec/flood/issues/342

Screenshots

after

flood --allowedpath /srv/dev-disk-by-uuid-8a152260-f328-4f09-b56c-a99881c8261c

Types of changes

• [ ] Breaking change (changes that break backward compatibility of public API or CLI - semver MAJOR)
• [ ] New feature (non-breaking change which adds functionality - semver MINOR)
• [X] Bug fix (non-breaking change which fixes an issue - semver PATCH)

[codecov[bot]]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (1192e14) 77.10% compared to head (09a38c4) 77.09%.

Files	Patch %	Lines
server/models/DiskUsage.ts	75.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #643      +/-   ##
==========================================
- Coverage   77.10%   77.09%   -0.02%     
==========================================
  Files          61       61              
  Lines       11313    11316       +3     
  Branches      795     1284     +489     
==========================================
+ Hits         8723     8724       +1     
+ Misses       2590     2578      -12     
- Partials        0       14      +14     

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