图谱推送诊断，确诊在前，拟诊在后

common-push/src/main/java/org/diagbot/common/push/filter/ClassifyDiag.java

@@ -264,10 +264,10 @@ public class ClassifyDiag {
      * @return
      */
     public Set<String> diagProcess(List<String> disList,int sign){
-        Set<String> first = new HashSet<>();
-        Set<String> second= new HashSet<>();
-        Set<String> third= new HashSet<>();
-        Set<String> other= new HashSet<>();
+        Set<String> first = new LinkedHashSet<>();
+        Set<String> second= new LinkedHashSet<>();
+        Set<String> third= new LinkedHashSet<>();
+        Set<String> other= new LinkedHashSet<>();
 
         /**
          * 分级