tests: Increase timeout for loaded systems

tests: Increase timeout for loaded systems

When running this test on a locally loaded system I am seeing the
static route as `queued` still after 1 second.  Let's just blanket
increase the timeout to something longer to give a very loaded system
more time to install the route.

Output on my test system when it was loaded:

INFO     topolog.r1:topogen.py:880 vtysh result:
	{
	  "4.5.1.0/24":[
	    {
	      "prefix":"4.5.1.0/24",
	      "prefixLen":24,
	      "protocol":"static",
	      "vrfId":0,
	      "vrfName":"default",
	      "selected":true,
	      "destSelected":true,
	      "distance":1,
	      "metric":0,
	      "queued":true,
	      "table":254,
	      "internalStatus":8,
	      "internalFlags":73,
	      "internalNextHopNum":1,
	      "internalNextHopActiveNum":1,
	      "uptime":"00:00:00",
	      "nexthops":[
	        {
	          "flags":1,
	          "ip":"192.168.216.3",
	          "afi":"ipv4",
	          "interfaceIndex":11,
	          "interfaceName":"r1-eth6",
	          "active":true,
	          "weight":1
	        }
	      ]
	    },

I suspect 10 seconds should be enough( I would hope ).

Signed-off-by: Donald Sharp <sharpd@nvidia.com>