Update spring-cloud-greenwich.gradle

spring-cloud-greenwich.gradle

-plugins {
-    id 'org.springframework.boot' version '2.1.3.RELEASE'
+buildscript {
+    ext {
+        springBootVersion = '2.1.3.RELEASE'
+    }
+    repositories {
+        maven { url "https://maven.aliyun.com/repository/central" }
+        maven { url "https://plugins.gradle.org/m2/" }
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}"
+    }
 }
-
-apply plugin: 'io.spring.dependency-management'
+apply plugin: org.springframework.boot.gradle.plugin.SpringBootPlugin
+apply plugin: io.spring.gradle.dependencymanagement.DependencyManagementPlugin
 
 repositories {
+    mavenLocal()
+    maven { url "https://maven.aliyun.com/repository/central" }
+    maven { url "https://repo.spring.io/milestone" }
     mavenCentral()
-    maven { url 'https://repo.spring.io/milestone' }
 }
 
 ext {