[release-0.19] Add newline to GetGenericObject log line in testing

[knative-prow-robot]

This is an automated cherry-pick of #4636

[google-cla]

All (the pull request submitter and all commit authors) CLAs are signed, but one or more commits were authored or co-authored by someone other than the pull request submitter.

We need to confirm that all authors are ok with their commits being contributed to this project. Please have them confirm that by leaving a comment that contains only @googlebot I consent. in this pull request.

Note to project maintainer: There may be cases where the author cannot leave a comment, or the comment is not properly detected as consent. In those cases, you can manually confirm consent of the commit author(s), and set the cla label to yes (if enabled on your project).

ℹ️ Googlers: Go here for more info.

[lberk]

@googlebot I consent.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-0.19@3bf5a51). Click here to learn what that means.
The diff coverage is n/a.

@@               Coverage Diff               @@
##             release-0.19    #4646   +/-   ##
===============================================
  Coverage                ?   81.27%           
===============================================
  Files                   ?      282           
  Lines                   ?     8004           
  Branches                ?        0           
===============================================
  Hits                    ?     6505           
  Misses                  ?     1112           
  Partials                ?      387           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3bf5a51...ad85d85. Read the comment docs.

[lberk]

/lgtm

[lberk]

/approve

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: knative-prow-robot, lberk

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• test/OWNERS [lberk]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment