Merge pull request #1352 from peixiu/shutdown_limited_set

block_hotplug: Modify the repeat time and add limited condition for with_shutdown case

qemu/tests/cfg/block_hotplug.cfg

@@ -24,10 +24,10 @@
     variants:
         - one_pci:
             blk_num = 1
-            repeat_times = 3
+            repeat_times = 1
         - multi_pci:
             blk_num = 2
-            repeat_times = 3
+            repeat_times = 1
             images += " stg1"
             boot_drive_stg1 = no
             image_name_stg1 = images/storage1
@@ -38,7 +38,7 @@
     variants:
         - @default:
         - with_repetition:
-            repeat_times = 300
+            repeat_times = 100
         - with_reboot:
             sub_type_after_plug = boot
             sub_type_after_unplug = boot
@@ -46,6 +46,7 @@
         - with_shutdown:
             variants:
                 - after_plug:
+                    only with_plug
                     sub_type_after_plug = shutdown
                 - after_unplug:
                     sub_type_after_unplug = shutdown