ARQ-374 custom Location URL via arquillian.xml

@lfryc

https://issues.jboss.org/browse/ARQGRA-374
@lfryc @aslakknutsen 

I am not sure if I did it right. 

If I override URLResourceProvider in GrapheneExtension with CustomizableURLResourceProvider, Arquillian enriches test class here (1) where it iterates over lookup methods.

In that lookup method I have to call super.doLookup of super class URLResourceProvider since doing just lookup will call this (2) on OperatesOnDeploymentAwareProvider super class.

I do not know if we are losing something here by not calling just "lookup" method which triggers "runInDeploymentContext" because we do not have any deployment be we obviously could.

(1) https://github.com/arquillian/arquillian-core/blob/master/test/impl-base/src/main/java/org/jboss/arquillian/test/impl/enricher/resource/ArquillianResourceTestEnricher.java#L112
(2) https://github.com/arquillian/arquillian-core/blob/master/container/test-impl-base/src/main/java/org/jboss/arquillian/container/test/impl/enricher/resource/OperatesOnDeploymentAwareProvider.java#L60