Fix custom qa checks

[greenape]

Closes #3484

I have:

• Formatted any Python files with black
• Brought the branch up to date with master
• Added any relevant Github labels
• Added tests for any new additions
• Added or updated any relevant documentation
• Added an Architectural Decision Record (ADR), if appropriate
• Added an MPLv2 License Header if appropriate
• Updated the Changelog

Description

Properly adds the tags folder to the search path for collecting etl checks, and allows passing additional search paths.

[cypress]

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Test summary

43 • 0 • 0 • 0

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Run details

Project	FlowAuth
Status	Passed
Commit	11384b3
Started	Jan 14, 2021 11:55 AM
Ended	Jan 14, 2021 11:57 AM
Duration	02:34 💡
OS	Linux Debian - 8.11
Browser	Electron 80

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[codecov]

Codecov Report

Merging #3489 (11384b3) into master (5a008a4) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #3489   +/-   ##
=======================================
  Coverage   93.15%   93.15%           
=======================================
  Files         251      251           
  Lines       10128    10128           
  Branches      865      865           
=======================================
  Hits         9435     9435           
  Misses        562      562           
  Partials      131      131           

Flag	Coverage Δ
autoflow_unit_tests	92.99% <ø> (ø)
flowapi_unit_tests	72.84% <ø> (ø)
flowauth_unit_tests	78.39% <ø> (ø)
flowclient_unit_tests	74.88% <ø> (ø)
flowetl_unit_tests	95.40% <100.00%> (ø)
flowkit_jwt_generator_unit_tests	95.10% <ø> (ø)
flowmachine_unit_tests	90.79% <ø> (ø)
integration_tests	66.78% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
flowetl/flowetl/flowetl/util.py	100.00% <100.00%> (ø)

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[jc-harrison]

👍