android 10 解决PC工具写入DNS，重启后无效问题

— a/frameworks/base/services/core/java/com/android/server/CmServices.java
+++ b/frameworks/base/services/core/java/com/android/server/CmServices.java
@@ -276,7 +276,7 @@ public class CmServices extends SystemService {
//pw.println(“adb cm get domain”);
JSONObject jsonObjectDomain = new JSONObject();
try{

•                                                                                   jsonObjectDomain.put("domain",CmServiceUtils.execByRuntime("getprop net.dns1").replace("\n",""));       
  

•                                                                                   jsonObjectDomain.put("domain",CmServiceUtils.execByRuntime("getprop persist.net.dns1").replace("\n",""));       ^M
                                                                                    pw.println(Result + jsonObjectDomain.toString());       
                                                                            }catch(Exception e){
                                                                                    pw.println(Result + "ERROR"); 
  

@@ -426,7 +426,7 @@ public class CmServices extends SystemService {
//pw.println(“adb shell cm set domain”);
key = getNextArg();
try{

•                                                                                   CmServiceUtils.execByRuntime("setprop net.dns1 " + key);                                                                        
  

•                                                                                   CmServiceUtils.execByRuntime("setprop persist.net.dns1 " + key);                                                                        ^M
                                                                                    pw.println(Result + "OK");      
                                                                            }catch(Exception e){
                                                                                    pw.println(Result + "ERROR");