re-organize configuration files; add tcpdump integration

Let's make sure we share common configuration between the test
suites and split the config file into a "default" part which is
used (but not copied) in the Docker images, and a "local" part
which is basically those overrides that the user (or docker image)
wants to do from the default.

Change-Id: I3db452e24e5238aa05254d903739c64d202e61db
diff --git a/mgw/MGCP_Test.default b/mgw/MGCP_Test.default
new file mode 100644
index 0000000..c9d6129
--- /dev/null
+++ b/mgw/MGCP_Test.default
@@ -0,0 +1,15 @@
+[LOGGING]
+FileMask := LOG_ALL | TTCN_MATCHING;
+
+[TESTPORT_PARAMETERS]
+
+[MODULE_PARAMETERS]
+mp_local_udp_port := 2727;
+mp_local_ip:= "127.0.0.1";
+mp_remote_udp_port := 2427;
+mp_remote_ip:= "127.0.0.1";
+
+[MAIN_CONTROLLER]
+
+[EXECUTE]
+MGCP_Test.control