BIGTOP-4322: Add SeaTunnel to extra stack

Author: wuchunfu

bigtop-manager-stack/bigtop-manager-stack-extra/src/main/java/org/apache/bigtop/manager/stack/extra/v1_0_0/seatunnel/SeaTunnelParams.java

@@ -29,7 +29,6 @@
 import lombok.NoArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 
-import java.text.MessageFormat;
 import java.util.Map;
 
 @Slf4j
@@ -73,16 +72,11 @@ public String confDir() {
     }
 
     public String sparkHome() {
-        return servicesStackHome() + "/spark";
+        return stackHome() + "/spark";
     }
 
     public String flinkHome() {
-        return servicesStackHome() + "/flink";
-    }
-
-    public String servicesStackHome() {
-        String root = LocalSettings.cluster().getRootDir();
-        return MessageFormat.format("{0}/services", root);
+        return stackHome() + "/flink";
     }
 
     @GlobalParams