add bridge-utils into default one

Change-Id: I72ef9955c19214a0642ad4bb910b4467c32e17ae
diff --git a/common/ubuntu_base.sh b/common/ubuntu_base.sh
index 383e33d..e918003 100644
--- a/common/ubuntu_base.sh
+++ b/common/ubuntu_base.sh
@@ -43,7 +43,8 @@
 # Common prerequisites
 # growlvm.py dependencies
 GROWLVM_PKGS="python-jsonschema python-yaml"
-EXTRA_PKGS="${EXTRA_PKGS} apt-transport-https libmnl0 python-apt python-m2crypto python-psutil acpid virt-what dbus $GROWLVM_PKGS"
+# TODO add common vlan package here
+EXTRA_PKGS="$EXTRA_PKGS $GROWLVM_PKGS apt-transport-https libmnl0 python-apt python-m2crypto python-psutil acpid virt-what dbus bridge-utils"
 apt-get -y install ${EXTRA_PKGS}
 
 # Cleanup old kernels, ensure latest is installed via metapackage package