Move PMD configuration to top level build.gradle file and explicitly specify version.

workspace/cayenne/build.gradle

@@ -1,4 +1,2 @@
-apply plugin: 'pmd'
-
 dependencies {
 }

workspace/gradle/build.gradle

@@ -8,6 +8,7 @@ apply from:'dependencies.gradle'
 subprojects {
     apply plugin: "java"
     apply plugin: "eclipse"
+    apply plugin: "pmd"
     
     targetCompatibility = 1.8
     targetCompatibility = 1.8
@@ -16,6 +17,10 @@ subprojects {
         mavenCentral()
     }
 
+    pmd {
+        toolVersion = "5.8.1"
+    }
+
     // Standard libraries added to all projects
     dependencies {
         testCompile libraries.junit

workspace/ttnhabbridge/build.gradle

@@ -1,5 +1,4 @@
 apply plugin: "application"
-apply plugin: 'pmd'
 
 mainClassName = 'nl.sikken.bertrik.TtnHabBridge'
 
@@ -11,12 +10,6 @@ dependencies {
     compile libraries.jersey_client
 }
 
-pmd {
-    //toolVersion = "5.2.1"
-    ruleSetFiles = files("pmd-ruleset.xml")
-    ruleSets = []
-}
-
 //Add configuration folder to classpath:
 startScripts {
     classpath += files('../cfg')