Fixed wrong path to role in node scaleup playbook

[fefl]

Providing a fix for #10766 by setting the correct path to the role for scaling up nodes in an existing cluster.

[papr-bot]

Can one of the admins verify this patch?
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[michaelgugino]

/ok-to-test

[michaelgugino]

/lgtm

[michaelgugino]

/approve

[michaelgugino]

/test tox

[michaelgugino]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: fefl, michaelgugino
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[fefl]

/retest

[openshift-ci-robot]

@fefl: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/openshift-jenkins/gcp	a6ad232	link	/test gcp

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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