The current Beaker acceptance tests use netstat to check when an ODL
port opens up. Looking at the log, it seems netstat is no longer
installed by default in our centos:7 container. Install net-tools
package in via nodefile.
JIRA: INTPAK-208
Change-Id: If631ba2f99a2360aeb0790b1d6e2f160b075c8b0 Signed-off-by: Daniel Farrell <dfarrell@redhat.com>