[SUREFIRE-2049] Upgrade Surefire Provider interface

**[Tibor Digana](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=tibor17)** opened **[SUREFIRE-2049](https://issues.apache.org/jira/browse/SUREFIRE-2049?redirect=false)** and commented

The interface `SurefireProvider` has several drawbacks:

1. method `getSuites()` should be deleted and substituted by a negotiation mechanism between the plugin process and surefire forked process. TODO: analyse as-is-status in the `in-plugin` mode
2. method `invoke( Object forkTestSet )` has parameter of Java type Object. This should respect polymorphic approach.
3. analyse the impact of the method `cancel()`

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**Issue Links:**
- [SUREFIRE-2073](https://issues.apache.org/jira/browse/SUREFIRE-2073) Test class filtering should be done in the particular fork JVM where the real test would run.
(_**"blocks"**_)
- [SUREFIRE-1560](https://issues.apache.org/jira/browse/SUREFIRE-1560) Rework SUREFIRE-1535. Use only FORKTESTSET and split SurefireProvider to two interfaces - currently has two responsibilities
(_**"is duplicated by"**_)

Start by locating the SurefireProvider interface and its implementations, then read the in-plugin mode around the getSuites(), invoke(Object forkTestSet), and cancel() methods. Analyse the existing provider responsibilities and the impact of SUREFIRE-2073 and SUREFIRE-1560; done means agreeing on and implementing the revised interface and negotiation approach.

Written by the indexing model from the issue text.