upgrade some maven plugins versions

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/cli/trunk@1423222 13f79535-47bb-0310-9956-ffa450edef68

Author: olamy

pom.xml

@@ -202,7 +202,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.1</version>
+        <version>2.9.1</version>
         <configuration>
           <configLocation>${basedir}/src/conf/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
@@ -212,7 +212,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>findbugs-maven-plugin</artifactId>
-        <version>2.4.0</version>
+        <version>2.5.2</version>
         <configuration>
           <threshold>Normal</threshold>
           <effort>Default</effort>
@@ -221,12 +221,12 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>cobertura-maven-plugin</artifactId>
-        <version>2.2</version>
+        <version>2.5.2</version>
       </plugin>
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>clirr-maven-plugin</artifactId>
-        <version>2.2.1</version>
+        <version>2.5</version>
         <configuration>
           <comparisonVersion>1.2</comparisonVersion>
         </configuration>