[release-4.19] Update project makefile to improve shared library script usage

[openshift-cherrypick-robot]

This is an automated cherry-pick of #2294

/assign fontivan

[fontivan]

/approve
/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: fontivan
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[fontivan]

/test ibi-e2e-flow

[openshift-ci]

@openshift-cherrypick-robot: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/security	30e4f3e	link	false	/test security
ci/prow/ibu-e2e-flow	30e4f3e	link	false	/test ibu-e2e-flow

Full PR test history. Your PR dashboard.

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[fontivan]

/test ibi-e2e-flow
/test ibu-e2e-flow

[fontivan]

/cc @rauhersu @jc-rh