cleanup: use $OPENSHIFT_INSTALLER path

[honza]

The ocp directory doesn't always have the binary present. For example, the cleanup commands will fail when openshift-installer is built from git. The var is populate in common.sh and the same pattern is used in utils.sh when creating the cluster.

[elfosardo]

/retest

[elfosardo]

/lgtm

[honza]

/retest

[cybertron]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cybertron

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[honza]

/retest-required

[elfosardo]

/override ci/prow/e2e-metal-ipi-serial-ipv4
unrelated known issue

[openshift-ci]

@elfosardo: Overrode contexts on behalf of elfosardo: ci/prow/e2e-metal-ipi-serial-ipv4

In response to this:

/override ci/prow/e2e-metal-ipi-serial-ipv4
unrelated known issue

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[elfosardo]

/override ci/prow/e2e-metal-ipi-bm
unrelated issue

[openshift-ci]

@elfosardo: Overrode contexts on behalf of elfosardo: ci/prow/e2e-metal-ipi-bm

In response to this:

/override ci/prow/e2e-metal-ipi-bm
unrelated issue

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-sigs/prow repository.

[honza]

/retest-required

[openshift-ci]

@honza: The following test 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/e2e-metal-ipi-ovn-ipv6	0a6b851	link	true	/test e2e-metal-ipi-ovn-ipv6

Full PR test history. Your PR dashboard.

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-sigs/prow repository. I understand the commands that are listed here.