set worker group (#2743)

* simple config

* fix worker group config no effect

dolphinscheduler-server/src/main/resources/config/install_config.conf

@@ -91,8 +91,8 @@ s3SecretKey="xxxxxxxxxx"
 # if not use hadoop resourcemanager, please keep default value; if resourcemanager HA enable, please type the HA ips ; if resourcemanager is single, make this value empty
 yarnHaIps="192.168.xx.xx,192.168.xx.xx"
 
-# if resourcemanager HA enable or not use resourcemanager, please keep the default value; If resourcemanager is single, you only need to replace ark1 to actual resourcemanager hostname.
-singleYarnIp="ark1"
+# if resourcemanager HA enable or not use resourcemanager, please skip this value setting; If resourcemanager is single, you only need to replace yarnIp1 to actual resourcemanager hostname.
+singleYarnIp="yarnIp1"
 
 # resource store on HDFS/S3 path, resource file will store to this hadoop hdfs path, self configuration, please make sure the directory exists on hdfs and have read write permissions。/dolphinscheduler is recommended
 resourceUploadPath="/dolphinscheduler"
@@ -130,8 +130,7 @@ masters="ds1,ds2"
 
 # run worker machine
 # note: need to write the worker group name of each worker, the default value is "default"
-
-declare -A workersGroup=(["ds1"]="default" ["ds2"]="default" ["ds3"]="default" ["ds4"]="default" ["ds5"]="default")
+workers="ds1:default,ds2:default,ds3:default,ds4:default,ds5:default"
 
 # run alert machine
 # note: list of machine hostnames for deploying alert server