changing HashMap to LinkedHashMap for deterministic iterations (#3109)

sharding-core/sharding-core-common/src/main/java/org/apache/shardingsphere/core/rule/Authentication.java

@@ -20,7 +20,7 @@ package org.apache.shardingsphere.core.rule;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 
-import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.Map;
 
 /**
@@ -32,5 +32,5 @@ import java.util.Map;
 @Getter
 public final class Authentication {
     
-    private Map<String, ProxyUser> users = new HashMap<>();
+    private Map<String, ProxyUser> users = new LinkedHashMap<>();
 }

sharding-core/sharding-core-common/src/main/java/org/apache/shardingsphere/core/yaml/config/common/YamlAuthenticationConfiguration.java

@@ -21,7 +21,7 @@ import lombok.Getter;
 import lombok.Setter;
 import org.apache.shardingsphere.core.yaml.config.YamlConfiguration;
 
-import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.Map;
 
 /**
@@ -33,5 +33,5 @@ import java.util.Map;
 @Setter
 public final class YamlAuthenticationConfiguration implements YamlConfiguration {
     
-    private Map<String, YamlProxyUserConfiguration> users = new HashMap<>();
+    private Map<String, YamlProxyUserConfiguration> users = new LinkedHashMap<>();
 }