Make Vaadin TB3/4 tests work and run on PhantomJS (#13291)

Change-Id: I0d1747d41b3b9e0a32d995a5cea9081292c8c2c6
Add build parameters to allow running test on local PhantomJS

Change-Id: I99f37403d58385a814347d36b0f8b1a35c63c282