Merge pull request #102 from apache/dp

declare aether explicitly
diff --git a/pom.xml b/pom.xml
index 9c58544..78447ff 100644
--- a/pom.xml
+++ b/pom.xml
@@ -129,9 +129,14 @@
     <dependency>
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-settings</artifactId>
-      <version>3.1.1</version>
+      <version>${mavenVersion}</version>
     </dependency>
-
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-aether-provider</artifactId>
+      <version>${mavenVersion}</version>
+    </dependency>
+    
     <!-- reporting -->
     <dependency>
       <groupId>org.apache.maven.reporting</groupId>
@@ -260,10 +265,21 @@
     
     <dependency>
       <groupId>org.eclipse.aether</groupId>
+      <artifactId>aether-api</artifactId>
+      <version>0.9.0.M2</version>
+    </dependency>
+    <dependency>
+      <groupId>org.eclipse.aether</groupId>
+      <artifactId>aether-util</artifactId>
+      <version>0.9.0.M2</version>
+    </dependency>
+    <dependency>
+      <groupId>org.eclipse.aether</groupId>
       <artifactId>aether-connector-wagon</artifactId>
       <version>0.9.0.M2</version>
       <scope>provided</scope>
     </dependency>
+    
     <dependency>
       <groupId>org.apache.maven.wagon</groupId>
       <artifactId>wagon-http-lightweight</artifactId>