overrideConfig(Value|Values)
This continues the work in the child patch to replace callers of setMwGlobals() with the appropriate method. Directory this patch covers is `tests/phpunit/integration/`. Change-Id: I0a9abf0d2a43587f2ffa029b68024a1ba5165fc7
Change-Id: Ifb353dc5e0a90a2dc01c1b196fc83696e39b4b8d