LPS-41463
Revert "LPS-39137 Go back to perTest"

This reverts commit ee02f6ab801337a964f2e65b77388122a7812b64.
LPS-41465 When portal is websphere default web application, reset servlet context name to blank string
LPS-41464  AcceptorServlet should lookup portal servlet context base on PortalUtil.getPathContext()
LPS-41464 Fix test
LPS-41464 SF