Allow plugin repos to actually overwrite repo configs

[felixwang9817]

Signed-off-by: Felix Wang wangfelix98@gmail.com

What this PR does / why we need it: This PR fixes a previous mistake which prevented plugin repos from actually overwriting repo configs.

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

NONE

[codecov-commenter]

Codecov Report

Merging #1966 (b844236) into master (3b5ea8f) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1966      +/-   ##
==========================================
+ Coverage   81.97%   81.99%   +0.01%     
==========================================
  Files          99      100       +1     
  Lines        7922     7925       +3     
==========================================
+ Hits         6494     6498       +4     
+ Misses       1428     1427       -1     

Flag	Coverage Δ
integrationtests	74.31% <ø> (+0.02%)	⬆️
unittests	59.54% <ø> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
...ts/integration/feature_repos/repo_configuration.py	93.58% <ø> (+0.40%)	⬆️
...tion/feature_repos/integration_test_repo_config.py	100.00% <0.00%> (ø)

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[achals]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, felixwang9817

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[felixwang9817]

/kind bug