Fix for bug 1755120, when key is undefined ansible sets unicode type

[rjhowe]

Fix for bug 1755120, when key is undefined ansible sets variable to
python type unicode. This fix uses default filter to map undefined
to null. This results in the variable set to python type list as expected.

[patrickdillon]

/retitle Bug 1755120: when key is undefined ansible sets unicode type

[openshift-ci-robot]

@rjhowe: This pull request references Bugzilla bug 1755120, which is invalid:

• expected Bugzilla bug 1755120 to depend on a bug in one of the following states: VERIFIED, RELEASE_PENDING, CLOSED (ERRATA), but no dependents were found

Comment /bugzilla refresh to re-evaluate validity if changes to the Bugzilla bug are made, or edit the title of this pull request to link to a different bug.

In response to this:

Bug 1755120: when key is undefined ansible sets unicode type

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[patrickdillon]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: patrickdillon, rjhowe

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[patrickdillon]

/remove-label bugzilla/invalid-label

[openshift-ci-robot]

@patrickdillon: The label(s) /remove-label bugzilla/invalid-label cannot be applied. These labels are supported: platform/aws, platform/azure, platform/baremetal, platform/google, platform/libvirt, platform/openstack, ga

In response to this:

/remove-label bugzilla/invalid-label

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[patrickdillon]

Hm I guess the bugzilla automation process is problematic for 3.x. Didn't realize that.

/retitle Fix for bug 1755120, when key is undefined ansible sets unicode type

[openshift-ci-robot]

@rjhowe: No Bugzilla bug is referenced in the title of this pull request.
To reference a bug, add 'Bug XXX:' to the title of this pull request and request another bug refresh with /bugzilla refresh.

In response to this:

Fix for bug 1755120, when key is undefined ansible sets unicode type

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[patrickdillon]

/cherry-pick release-3.10

[openshift-cherrypick-robot]

@patrickdillon: new pull request created: #12051

In response to this:

/cherry-pick release-3.10

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.