qemu.tests: Update mq_change_qnum to match with our test case.

Signed-off-by: NFeng Yang <fyang@redhat.com>

qemu/tests/cfg/mq_change_qnum.cfg

 - mq_change_qnum:
+    only Linux
     queues = 4
     vectors = 9
     virt_test_type = qemu
@@ -6,46 +7,40 @@
     #In this test need set snapshot for our test will chang guest msi support
     image_snapshot = yes
     #set repeat_counts for chang queues number
-    repeat_counts = 10
+    repeat_counts = 100
+    ext_host_get_cmd = "ip route | awk '/default/ { print $3 }'"
     variants:
         - enable_msi:
-            only Linux
         - disable_msi:
-            only Linux
             pci_nomsi = yes
             #after set pci_nomsi, we need kill the vm.
             kill_vm = yes
     variants:
         - under_pktgen:
+            ping_after_changing_queues = yes
+            final_ping_time = 30
             wait_bg_time = 60
             run_bgstress = pktgen
             bg_stress_run_flag = pktgen_run
             pktgen_test_timeout = 1200
             #set pktgen threads
-            pktgen_threads =  1
+            pktgen_threads = 1
             variants:
                 - guest_guest:
-                    only Linux
                     pktgen_server = vm2
                     vms += " vm2"
                     image_snapshot = yes
                 - host_guest:
                     #host as server
                     password_pktgen_server = redhat
-                    shell_prompt_pktgen_server =  \[root@.{0,50}][\#\$]
-                - exthost_guest:
-                    #exthost as server
-                    pktgen_server = 10.66.9.48
-                    server_interface = switch
-                    password_pktgen_server = redhat
-                    shell_prompt_pktgen_server =  \[root@.{0,50}][\#\$]
+                    shell_prompt_pktgen_server = \[root@.{0,50}][\#\$]
         - under_netperf_and_ping:
             # netperf server is host, the netperf client is the main vm
             wait_bg_time = 60
             run_bgstress = netperf_stress
             bg_ping = yes
-            repeat_counts = 400 
-            ping_time = 300
+            repeat_counts = 400
+            background_ping_time = 300
             bg_stress_run_flag = netperf_run
             netperf_test_duration = 900
             # netperf_para_sessions should bigger than queues parameter.
@@ -72,8 +67,9 @@
             run_bgstress = file_copy_stress
             bg_stress_run_flag = file_transfer_run
             stress_timeout = 6000
-            filesize = 512
-            transfer_timeout = 1000
+            filesize = 1500
+            transfer_timeout = 1500
+            repeat_counts = 1000
             transfer_type = remote
             scp_para_sessions = 6
         - under_migrate: