adding igmp capability to tester container

Change-Id: Ib1632da1ad8864afdc3e148e840929690365c66b
diff --git a/docker/Dockerfile.tester b/docker/Dockerfile.tester
index a7778df..617ef13 100644
--- a/docker/Dockerfile.tester
+++ b/docker/Dockerfile.tester
@@ -6,4 +6,9 @@
 
 RUN apt update && apt install -y iperf isc-dhcp-client tcpdump net-tools iproute2 iputils-ping wpasupplicant
 
+COPY config/igmp.py /usr/local/bin
+COPY config/igmpv3.py /usr/local/bin
+
+RUN chmod 755 /usr/local/bin/igmp.py
+
 COPY config/wpa_supplicant.conf /etc/wpa_supplicant/