Merge pull request #676 from CongLi/query_events

qmp_command: add command "query-events", "device-list-properties" and "query-command-line-options".

qemu/tests/cfg/qmp_command.cfg

@@ -181,3 +181,15 @@
             qmp_cmd = "query-pci"
             cmd_result_check = contain
             cmd_return_value = "function;regions;qdev"
+        - qmp_query-events:
+            qmp_cmd = "query-events"
+            cmd_result_check = contain
+            cmd_return_value = "BALLOON_CHANGE;STOP;WATCHDOG"
+        - qmp_device-list-properties:
+            qmp_cmd = "device-list-properties typename=virtio-balloon-pci"
+            cmd_result_check = contain
+            cmd_return_value = "command_serr_enable;multifunction"
+        - qmp_query-command-line-options:
+            qmp_cmd = "query-command-line-options"
+            cmd_result_check = contain
+            cmd_return_value = "option-rom;bootindex;romfile"