Add default Infinispan JGroups stacks for the test suite

As a QE, I would like to set one argument and let the whole test suite behavior in the same way:

Today we need the following arguments:

• org.infinispan.test.server.cluster.stack
• infinispan.cluster.stack

It is not possible to use default-jgroups-tcp.xml or default-jgroups-udp.xml in the core module. In the server module, I can use it.

The name of the stacks for the core and server module is not matching.

• For the core, when using tcp, it is using stacks/test-tcp.xml
• For the server, when using tcp, it is using default-jgroups-tcp.xml

The main goals of this JIRA:

• Keep only one argument: infinispan.cluster.stack
• Allow the core module uses default-jgroups-tcp.xml or default-jgroups-udp.xml
• Standardize the stack name:
• * tcp -> default-jgroups-tcp.xml
• * udp -> default-jgroups-udp.xml
• * test-tcp -> tcp.xml
• * test-udp -> udp.xml