[NETBEANS-5336] Replace jcenter() to mavenCentral() in Gradle Projects

extide/gradle/netbeans-gradle-tooling/build.gradle

@@ -26,7 +26,7 @@ sourceCompatibility = '1.8'
 [compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 dependencies {

extide/gradle/netbeans-gradle-tooling/src/test/data/multi/build.gradle

@@ -22,7 +22,7 @@ subprojects {
     apply plugin: 'jacoco'
     
     repositories {
-        jcenter()
+        mavenCentral()
     }
     
 }

extide/gradle/netbeans-gradle-tooling/src/test/data/simple-with-tests/build.gradle

@@ -28,7 +28,7 @@ import org.gradle.tooling.model.Task
 apply plugin: 'groovy'
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 dependencies {

extide/gradle/netbeans-gradle-tooling/src/test/data/unresolvable/build.gradle

@@ -20,7 +20,7 @@
 apply plugin: 'java'
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 dependencies {

extide/gradle/src/org/netbeans/modules/gradle/newproject/multi-root.gradle.template

@@ -9,7 +9,7 @@ allprojects {
 
 </#if>
     repositories {
-        jcenter()
+        mavenCentral()
     }
 }
 

extide/gradle/src/org/netbeans/modules/gradle/newproject/single-build.gradle.template

@@ -22,7 +22,7 @@ sourceCompatibility = ${javaVersion}
 targetCompatibility = ${javaVersion}
 </#if>
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 <#if dependencies??>