The current contents of the test suite take over 20m to complete. This slows down the rest of the tests in presubmits because the longest takes ~10m.
By splitting the standard suite, we should gain 10m in the CI presubmit times.

See https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/origin-ci-test/pr-logs/pull/openshift_microshift/2830/pull-ci-openshift-microshift-main-microshift-metal-tests/1742054154064367616/artifacts/microshift-metal-tests/openshift-microshift-e2e-metal-tests/artifacts/scenario-info/el92-src@standard-suite/log.html as an example.