Issue #2303881 by alexpott, effulgentsia: Fixed Config entity static cache doesn't get reset and isn't override aware.
Issue #2313875 by alexpott, yched: Preserve the 'field_type' within FieldInstanceConfig.
Issue #2272879 by clemens.tolboom, alexpott: Fixed Can not run a WebTestBase or KernelTest base tests from inside a simpletest.