support datax custom config

dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/task/datax/DataxParameters.java

@@ -204,8 +204,8 @@ public class DataxParameters extends AbstractParameters {
     @Override
     public String toString() {
         return "DataxParameters{" +
-                "customConfig=" + customConfig + '\'' +
+                "customConfig=" + customConfig  +
-                ", json=" + json + '\'' +
+                ", json='" + json + '\'' +
                 ", dsType='" + dsType + '\'' +
                 ", dataSource=" + dataSource +
                 ", dtType='" + dtType + '\'' +

dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/worker/task/datax/DataxTaskTest.java

@@ -95,7 +95,7 @@ public class DataxTaskTest {
     private void setTaskParems(Integer customConfig) {
         if (customConfig == 1) {
             props.setTaskParams(
-                    "{\"customConfig\":1, \"localParams\":[{\"prop\":\"test\",\"direct\":\"IN\",\"type\":\"VARCHAR\",\"value\":\"38294729\"}],\"json\":\"{\\\"job\\\":{\\\"setting\\\":{\\\"speed\\\":{\\\"byte\\\":1048576},\\\"errorLimit\\\":{\\\"record\\\":0,\\\"percentage\\\":0.02}},\\\"content\\\":[{\\\"reader\\\":{\\\"name\\\":\\\"rdbmsreader\\\",\\\"parameter\\\":{\\\"username\\\":\\\"xxx\\\",\\\"password\\\":\\\"${test}\\\",\\\"column\\\":[\\\"id\\\",\\\"name\\\"],\\\"splitPk\\\":\\\"pk\\\",\\\"connection\\\":[{\\\"querySql\\\":[\\\"SELECT * from dual\\\"],\\\"jdbcUrl\\\":[\\\"jdbc:dm://ip:port/database\\\"]}],\\\"fetchSize\\\":1024,\\\"where\\\":\\\"1 = 1\\\"}},\\\"writer\\\":{\\\"name\\\":\\\"streamwriter\\\",\\\"parameter\\\":{\\\"print\\\":true}}}]}}\"}");
+                    "{\"customConfig\":1, \"localParams\":[{\"prop\":\"test\",\"value\":\"38294729\"}],\"json\":\"{\\\"job\\\":{\\\"setting\\\":{\\\"speed\\\":{\\\"byte\\\":1048576},\\\"errorLimit\\\":{\\\"record\\\":0,\\\"percentage\\\":0.02}},\\\"content\\\":[{\\\"reader\\\":{\\\"name\\\":\\\"rdbmsreader\\\",\\\"parameter\\\":{\\\"username\\\":\\\"xxx\\\",\\\"password\\\":\\\"${test}\\\",\\\"column\\\":[\\\"id\\\",\\\"name\\\"],\\\"splitPk\\\":\\\"pk\\\",\\\"connection\\\":[{\\\"querySql\\\":[\\\"SELECT * from dual\\\"],\\\"jdbcUrl\\\":[\\\"jdbc:dm://ip:port/database\\\"]}],\\\"fetchSize\\\":1024,\\\"where\\\":\\\"1 = 1\\\"}},\\\"writer\\\":{\\\"name\\\":\\\"streamwriter\\\",\\\"parameter\\\":{\\\"print\\\":true}}}]}}\"}");
 
 //                    "{\"customConfig\":1,\"json\":\"{\\\"job\\\":{\\\"setting\\\":{\\\"speed\\\":{\\\"byte\\\":1048576},\\\"errorLimit\\\":{\\\"record\\\":0,\\\"percentage\\\":0.02}},\\\"content\\\":[{\\\"reader\\\":{\\\"name\\\":\\\"rdbmsreader\\\",\\\"parameter\\\":{\\\"username\\\":\\\"xxx\\\",\\\"password\\\":\\\"xxx\\\",\\\"column\\\":[\\\"id\\\",\\\"name\\\"],\\\"splitPk\\\":\\\"pk\\\",\\\"connection\\\":[{\\\"querySql\\\":[\\\"SELECT * from dual\\\"],\\\"jdbcUrl\\\":[\\\"jdbc:dm://ip:port/database\\\"]}],\\\"fetchSize\\\":1024,\\\"where\\\":\\\"1 = 1\\\"}},\\\"writer\\\":{\\\"name\\\":\\\"streamwriter\\\",\\\"parameter\\\":{\\\"print\\\":true}}}]}}\"}");
         } else {