installer: rename scaleup job to e2e-aws-scaleup-rhel7

[vrutkovs]

Rename e2e-rhel-scaleup to e2e-aws-scaleup-rhel7 so that more platform/OSes could be added later

[openshift-ci-robot]

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[openshift-ci-robot]

@vrutkovs: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/rehearse/openshift/installer/master/e2e-aws-scaleup-rhel7	ccda198	link	/test pj-rehearse
ci/prow/pj-rehearse	ccda198	link	/test pj-rehearse

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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[vrutkovs]

Replaced by #3473