CLOUDSTACK-9501: route is not available by default on CentOS7 (apache#1637)

This adds the `net-tools` dependency on CentOS cloudstack-agent rpms.
This will provide ifconfig, route and other tools that may be used
by CloudStack scripts and utilities.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

Author: alemorvan

packaging/centos7/cloud.spec

@@ -104,6 +104,7 @@ Requires: bridge-utils
 Requires: ebtables
 Requires: iptables
 Requires: ethtool
+Requires: net-tools
 Requires: iproute
 Requires: ipset
 Requires: perl