fix calls to system_call and ebi submissions

[antgonza]

No description provided.

[codecov-io]

Codecov Report

Merging #2345 into master will not change coverage.
The diff coverage is 0%.

@@          Coverage Diff           @@
##           master   #2345   +/-   ##
======================================
  Coverage    93.8%   93.8%           
======================================
  Files         163     163           
  Lines       18581   18581           
======================================
  Hits        17430   17430           
  Misses       1151    1151

Impacted Files	Coverage Δ
qiita_pet/test/test_download.py	94.96% <ø> (ø)	⬆️
qiita_pet/handlers/study_handlers/ebi_handlers.py	62.5% <0%> (ø)	⬆️

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