Fix AliasingErrorHandlerTest modifying test files

[janosh]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (22d1956) 64.86% compared to head (f005598) 64.84%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #301      +/-   ##
==========================================
- Coverage   64.86%   64.84%   -0.03%     
==========================================
  Files          51       51              
  Lines        5465     5458       -7     
==========================================
- Hits         3545     3539       -6     
+ Misses       1920     1919       -1     

Files	Coverage Δ
custodian/ansible/actions.py	88.67% <ø> (ø)
custodian/vasp/tests/test_handlers.py	100.00% <100.00%> (ø)
custodian/vasp/validators.py	83.82% <100.00%> (ø)
custodian/vasp/jobs.py	49.72% <0.00%> (ø)
custodian/vasp/handlers.py	78.56% <58.06%> (+0.12%)	⬆️

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