Fix NUOPC gnu restart issue by removing leading spaces in restartfiles list

[alperaltuntas]

Fix NUOPC gnu restart issue by removing leading spaces in restartfiles list.

Fixes #199

Testing:
ERS.TL319_t061.CMOM_JRA.cheyenne_gnu
ERS.TL319_t061.CMOM_JRA.cheyenne_intel

[codecov-commenter]

Codecov Report

Base: 37.19% // Head: 37.19% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (0f1fc03) compared to base (9d5d9bb).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff              @@
##           dev/ncar     #234      +/-   ##
============================================
- Coverage     37.19%   37.19%   -0.01%     
============================================
  Files           263      263              
  Lines         73147    73147              
  Branches      13625    13625              
============================================
- Hits          27208    27206       -2     
- Misses        40927    40929       +2     
  Partials       5012     5012              

Impacted Files	Coverage Δ
src/framework/MOM_document.F90	73.88% <0.00%> (-0.45%)	⬇️

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