Refactor the Vertx web socket test

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Document the exported package rules.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Extend documentation about the usage of Maven variable in the osgi.bnd file

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Fix #311

Apply the proposed patch to configure the JVM Arguments.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>