Provide a way to give precedence to ResourceProvider if multiple providers can provide resource of same type

[dipak-pawar]

Issue Overview

If multiple resource providers are on classpath which can provide resource of required type. Then arquillian takes first resource provider found on classpath.

There should be some way to provide precedence using which arquillian can return the required resource.

Also we should think for two different extensions having the same precedence while implementing this to avoid problems in the future.