Move TCKs to Maven and JUnit5 #36

[jbescos]

#36

Some comments for reviewers:

• Sigtest needs to be regenerated with a version that is understood by org.netbeans.tools:sigtest-maven-plugin:1.4. I don't know how to do that, maybe somebody can help here. This is the only test that is failing.
• It is done in similar way than jsonp tcks. There are 2 root maven modules, one contains the TCKs that can be used by different implementations, and other module is executing it with angus-activation implementation.
• Test UnnamedModule_Test was problematic. You will probably find tricky the maven-surefire-plugin configuration, but I didn't come up with an easier solution.
• I removed docker files because I think this is not needed because there are no dependencies on external resources.
• I didn't update the Jenkins file. This is something pending to be done.
• Pluggability folders does not contain anything useful yet. That is prepared for this other issue Add tests for SPI added for JAF 2.1 #31

[lukasj]

did you experiment with <useModulePath>true/false</useModulePath>? Did you try M4 version of surefire?

[jbescos]

I have tried now with M4 but I was not able to make it work.

I also tried with useModulePath that is true by default. I have run maven with -X to see the arguments and I don't see any --module-path. In the description it says:

Enabled by default. If enabled, module-info.java exists and 
 executes with JDK 9+, modular path is used.

Note that module-info.java in the test does not exist. We need to create also a module-info.java in this module. But, if we do this, we cannot test that unnamed modules are able to run jakarta.activation.

In my opinion surefire-plugin needs more customization.classpathDependencyExcludes is good, but we also need moduleDependencyIncludes. With that we could exclude jakarta.activation from classpath and add it in modulepath

[jbescos]

I have modified UnnamedModule_Test to skip if modules are not enabled.