[ATMOSPHERE-619] Add iproute2 in nova-ssh image (#2265)

diff --git a/images/nova-ssh/Dockerfile b/images/nova-ssh/Dockerfile
index c3976d7..6566b90 100644
--- a/images/nova-ssh/Dockerfile
+++ b/images/nova-ssh/Dockerfile
@@ -7,6 +7,7 @@
 RUN <<EOF bash -xe
 apt-get update -qq
 apt-get install -qq -y --no-install-recommends \
+    iproute2 \
     openssh-server \
     openssh-client
 EOF