Check if error via ListKeys of Storage Interface.

[fujitatomoya]

Signed-off-by: Tomoya Fujita Tomoya.Fujita@sony.com

/kind bug

What this PR does / why we need it:

Minor error check via LiseKeys of Storage Interface call.

Which issue(s) this PR fixes:

N.A (it just fixes debug log for user experience.)

Special notes for your reviewer:

I am not sure what kind of verification process or procedure required to this PR.
Could you provide the guidance about it?

[codecov]

Codecov Report

Merging #1015 (73d644a) into master (db7ea27) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1015   +/-   ##
=======================================
  Coverage   47.42%   47.42%           
=======================================
  Files          85       85           
  Lines       11791    11791           
=======================================
  Hits         5592     5592           
  Misses       5738     5738           
  Partials      461      461           

Flag	Coverage Δ
unittests	47.42% <ø> (ø)

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[Congrool]

lgtm, but seems e2e failed by accident, may need retest

[fujitatomoya]

@Congrool can you kick the test on your side? not sure how to kick it though.

[Congrool]

I also cannot trigger retest. But you can git commit --amend --no-edit --sign-off and push to github to trigger manually.

[Congrool]

/lgtm

[rambohe-ch]

/approve

[openyurt-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fujitatomoya, rambohe-ch

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