Added comments for how to debug arquillian managed container

Author: gvagenas

restcomm/restcomm.testsuite/HowToDebugTestsuiteUsingArquillianManagedServer.md

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+# How to Debug TestSuite when using Arquillian Manager container
+
+To debug a managed container we need to use remote debugging.
+Check here: http://arquillian.org/guides/getting_started_rinse_and_repeat/#debug_a_managed_server
+
+1. Edit `arquillian.xml` to include the following:
+
+`<property name="javaVmArguments">-agentlib:jdwp=transport=dt_socket,address=8787,server=y,suspend=y -Dorg.jboss.server.bootstrap.maxThreads=1</property>`
+
+Using the above, when the test case starts it will suspend waiting for the remote debugger to connect
+
+2. Using IDE settings, prepare remote debugging configuration that points to 127.0.0.1:8787
+
+3. Start test case, you will notice it suspend waiting for remote debugger
+
+4. Start remote debugger
+
+## Important note
+
+Remote debugging property should always be removed, otherwise CI and CD jobs will fail to run automatically testsuite