L2SS-229: Add git to the image for gitpython

docker-compose/itango/Dockerfile

@@ -6,7 +6,7 @@ FROM $DOCKER_REGISTRY_HOST/$DOCKER_REGISTRY_USER/tango-itango:${VERSION}
 RUN sudo apt-get -y update && \
     sudo apt-get -y upgrade && \
     sudo apt-get -y install apt-file apt-transport-https apt-utils aptitude && \
-    sudo aptitude -y install htop iftop iproute2 mc most net-tools tcpdump telnet tmux traceroute vim xterm && \
+    sudo aptitude -y install htop iftop iproute2 mc most net-tools tcpdump telnet tmux traceroute vim xterm git && \
     sudo aptitude clean && \
     sudo aptitude autoclean