vpp-swan: Add scripts for testing

Added scripts to reparing setups for testing

To prepare and run containers:
sudo ./extras/strongswan/vpp_sswan/docker/run.sh prepare_containers

To prepare setups:
sudo ./extras/strongswan/vpp_sswan/docker/run.sh config

To clean-up settups:
sudo ./extras/strongswan/vpp_sswan/docker/run.sh clean

To deleted all containers and images in Docker:
sudo ./extras/strongswan/vpp_sswan/docker/run.sh deleted

Type: feature
Signed-off-by: Gabriel Oginski <gabrielx.oginski@intel.com>
Change-Id: I77f01c0419dccc95f610046c8552ae825f2c7e12
diff --git a/extras/strongswan/vpp_sswan/docker/exposedockernetns.sh b/extras/strongswan/vpp_sswan/docker/exposedockernetns.sh
new file mode 100755
index 0000000..ff223ce
--- /dev/null
+++ b/extras/strongswan/vpp_sswan/docker/exposedockernetns.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+if [ "$1" == "" ]; then
+        echo "usage: $0 <container_name>"
+        echo "Exposes the netns of a docker container to the host"
+        exit 1
+fi
+
+        pid=`docker inspect -f '{{.State.Pid}}' $1`
+        ln -s /proc/$pid/ns/net /var/run/netns/$1
+
+        echo "netns of ${1} exposed as /var/run/netns/${1}"
+
+        #echo "try: ip netns exec ${1} ip addr list"