HADOOP-13816. Ambiguous plugin version warning from maven build. Contributed by Kai Sasaki.

hadoop-build-tools/pom.xml

@@ -54,6 +54,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-resources-plugin</artifactId>
+        <version>${maven-resources-plugin.version}</version>
         <executions>
           <execution>
             <id>copy-resources</id>
@@ -80,6 +81,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-remote-resources-plugin</artifactId>
+        <version>${maven-remote-resources-plugin.version}</version>
         <executions>
           <execution>
             <phase>process-resources</phase>

hadoop-tools/hadoop-rumen/pom.xml

@@ -94,11 +94,6 @@
       <type>test-jar</type>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>com.fasterxml.jackson.core</groupId>
-      <artifactId>jackson-databind</artifactId>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>

pom.xml

@@ -100,6 +100,8 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
     <maven-enforcer-plugin.version>1.4.1</maven-enforcer-plugin.version>
     <maven-javadoc-plugin.version>2.9.1</maven-javadoc-plugin.version>
     <maven-gpg-plugin.version>1.5</maven-gpg-plugin.version>
+    <maven-remote-resources-plugin.version>1.5</maven-remote-resources-plugin.version>
+    <maven-resources-plugin.version>3.0.1</maven-resources-plugin.version>
     <apache-rat-plugin.version>0.10</apache-rat-plugin.version>
     <wagon-ssh.version>1.0</wagon-ssh.version>
     <maven-clover2-plugin.version>3.3.0</maven-clover2-plugin.version>