Add checkstyle plugin

src/Client/build.gradle

@@ -13,32 +13,27 @@ apply plugin: 'idea'
 apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
 apply plugin: 'jacoco'
-//apply plugin: 'checkstyle'
-//
-//checkstyle {
-//    version = '7.8.1'
-//    config = 'checkstyle/checkstyle.xml' as File
-//}
-//
-//checkstyleMain {
-//    source ='src/main/java'
-//}
-//
-//checkstyleTest {
-//    source ='src/test/java'
-//}
-//
-//tasks.withType(Checkstyle) {
-//    reports {
-//        xml.enabled false
-//        html.enabled true
-//        html.stylesheet resources.text.fromFile('config/xsl/checkstyle-custom.xsl')
-//    }
-//}
+apply plugin: 'checkstyle'
 
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
+def configDir = "${project.rootDir}/quality"
+
+checkstyle {
+    toolVersion '7.8.1'
+    configFile file("$configDir/checkstyle/checkstyle.xml")
+    configProperties.checkstyleSuppressionsPath = file("$configDir/checkstyle/suppressions.xml").absolutePath
+}
+
+checkstyleMain {
+    source ='src/main/java'
+}
+
+checkstyleTest {
+    source ='src/test/java'
+}
+
 test {
     useJUnitPlatform()
 }