test: fix wget does not work in macchinina vms on vmware80u1

fixes error below
```
{Cmd: wget -t 1 -T 1 www.google.com via Host: 10.0.55.186} {returns: ["wget: '/usr/lib/libpcre.so.1' is not an ELF file", "wget: can't load library 'libpcre.so.1'"]}
```

Author: weizhouapache

test/integration/smoke/test_routers_network_ops.py

@@ -287,8 +287,8 @@ def test_01_RVR_Network_FW_PF_SSH_default_routes_egress_true(self):
                          )
 
         expected = 1
-        ssh_command = "wget -t 1 -T 5 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(
@@ -307,8 +307,8 @@ def test_01_RVR_Network_FW_PF_SSH_default_routes_egress_true(self):
                                  )
 
         expected = 0
-        ssh_command = "wget -t 1 -T 1 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(
@@ -451,8 +451,8 @@ def test_02_RVR_Network_FW_PF_SSH_default_routes_egress_false(self):
                          )
 
         expected = 0
-        ssh_command = "wget -t 1 -T 1 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(
@@ -480,8 +480,8 @@ def test_02_RVR_Network_FW_PF_SSH_default_routes_egress_false(self):
                                  )
 
         expected = 1
-        ssh_command = "wget -t 1 -T 5 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(
@@ -840,8 +840,8 @@ def test_01_isolate_network_FW_PF_default_routes_egress_true(self):
                          )
 
         expected = 1
-        ssh_command = "wget -t 1 -T 5 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(
@@ -860,8 +860,8 @@ def test_01_isolate_network_FW_PF_default_routes_egress_true(self):
                                  )
 
         expected = 0
-        ssh_command = "wget -t 1 -T 1 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(
@@ -995,8 +995,8 @@ def test_02_isolate_network_FW_PF_default_routes_egress_false(self):
                          )
 
         expected = 0
-        ssh_command = "wget -t 1 -T 1 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(
@@ -1015,8 +1015,8 @@ def test_02_isolate_network_FW_PF_default_routes_egress_false(self):
                                  )
 
         expected = 1
-        ssh_command = "wget -t 1 -T 5 www.google.com"
-        check_string = "HTTP request sent, awaiting response... 200 OK"
+        ssh_command = "curl -v -m 1 -o index.html -sL www.google.com"
+        check_string = "200 OK"
         result = check_router_command(virtual_machine, nat_rule.ipaddress, ssh_command, check_string, self)
 
         self.assertEqual(