JsonSchema: add processingTimeout

doc/json_schema.json

@@ -274,6 +274,11 @@
                     "type": "integer",
                     "title": "Set the timeout (ms) for WMI queries, `-1` for no timeout. Windows only",
                     "default": 5000
+                },
+                "processingTimeout": {
+                    "type": "integer",
+                    "title": "Set the timeout (ms) when waiting for child processes, `-1` for no timeout",
+                    "default": 1000
                 }
             },
             "additionalProperties": false