JENKINS-9788 : Put test-harness execution in a profile.

You can skip them by adding -P-run-test-harness in the build command line

test/pom.xml

@@ -45,50 +45,19 @@ THE SOFTWARE.
 
   <build>
     <plugins>
+      <plugin>
+        <groupId>org.kohsuke.stapler</groupId>
+        <artifactId>maven-stapler-plugin</artifactId>
+        <version>1.15</version>
+        <extensions>true</extensions>
+      </plugin>
       <plugin>
         <artifactId>maven-surefire-plugin</artifactId>
         <configuration>
-          <skip>true</skip><!-- tests now run by maven-junit-plugin -->
+          <skip>true</skip>
+          <!-- tests now run by maven-junit-plugin -->
         </configuration>
       </plugin>
-      <plugin>
-        <!-- see http://maven-junit-plugin.kenai.com/ for more info -->
-        <groupId>org.kohsuke</groupId>
-        <artifactId>maven-junit-plugin</artifactId>
-        <version>1.9</version>
-        <executions>
-          <execution>
-            <goals>
-              <goal>test</goal>
-            </goals>
-            <configuration>
-              <fork>true</fork>
-              <concurrency>${concurrency}</concurrency>
-              <argLine>-Dfile.encoding=UTF-8</argLine>
-              <timeout>300</timeout>
-              <systemProperties>
-                <property>
-                  <!-- use AntClassLoader that supports predictable file handle release -->
-                  <name>hudson.ClassicPluginStrategy.useAntClassLoader</name>
-                  <value>true</value>
-                </property>
-                <property>
-                  <name>hudson.maven.debug</name>
-                  <value>${mavenDebug}</value>
-                </property>
-                <property>
-                  <name>java.io.tmpdir</name>
-                  <value>${project.build.directory}</value>
-                </property> 
-                <property>
-                  <name>buildDirectory</name>
-                  <value>${project.build.directory}</value>
-                </property>                               
-              </systemProperties>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
       <plugin>
         <groupId>org.kohsuke.gmaven</groupId>
         <artifactId>gmaven-plugin</artifactId>
@@ -120,15 +89,9 @@ THE SOFTWARE.
           </dependency>
         </dependencies>
       </plugin>
-      <plugin>
-        <groupId>org.kohsuke.stapler</groupId>
-        <artifactId>maven-stapler-plugin</artifactId>
-        <version>1.15</version>
-        <extensions>true</extensions>
-      </plugin>
     </plugins>
   </build>
-  
+
   <dependencies>
     <dependency>
       <!--
@@ -159,7 +122,8 @@ THE SOFTWARE.
       <groupId>org.jvnet.hudson</groupId>
       <artifactId>test-annotations</artifactId>
       <version>1.0</version>
-      <scope>compile</scope><!-- in this module we need this as a compile scope, whereas in the parent it's test -->
+      <scope>compile</scope>
+      <!-- in this module we need this as a compile scope, whereas in the parent it's test -->
     </dependency>
     <dependency>
       <groupId>org.jvnet.mock-javamail</groupId>
@@ -181,11 +145,11 @@ THE SOFTWARE.
       <artifactId>htmlunit</artifactId>
       <version>2.6-jenkins-4</version>
       <exclusions>
-      	<exclusion>
-	      	<!--  hides JDK DOM classes in Eclipse -->
-      		<groupId>xml-apis</groupId>
-      		<artifactId>xml-apis</artifactId>
-      	</exclusion>
+        <exclusion>
+          <!--  hides JDK DOM classes in Eclipse -->
+          <groupId>xml-apis</groupId>
+          <artifactId>xml-apis</artifactId>
+        </exclusion>
       </exclusions>
     </dependency>
 
@@ -214,6 +178,54 @@ THE SOFTWARE.
   </dependencies>
 
   <profiles>
+
+    <profile>
+      <id>run-test-harness</id>
+      <build>
+        <plugins>
+          <plugin>
+            <!-- see http://maven-junit-plugin.kenai.com/ for more info -->
+            <groupId>org.kohsuke</groupId>
+            <artifactId>maven-junit-plugin</artifactId>
+            <version>1.9</version>
+            <executions>
+              <execution>
+                <goals>
+                  <goal>test</goal>
+                </goals>
+                <configuration>
+                  <fork>true</fork>
+                  <concurrency>${concurrency}</concurrency>
+                  <argLine>-Dfile.encoding=UTF-8</argLine>
+                  <timeout>300</timeout>
+                  <systemProperties>
+                    <property>
+                      <!-- use AntClassLoader that supports predictable file handle release -->
+                      <name>hudson.ClassicPluginStrategy.useAntClassLoader</name>
+                      <value>true</value>
+                    </property>
+                    <property>
+                      <name>hudson.maven.debug</name>
+                      <value>${mavenDebug}</value>
+                    </property>
+                    <property>
+                      <name>java.io.tmpdir</name>
+                      <value>${project.build.directory}</value>
+                    </property>
+                    <property>
+                      <name>buildDirectory</name>
+                      <value>${project.build.directory}</value>
+                    </property>
+                  </systemProperties>
+                </configuration>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+
+    </profile>
+
     <profile>
       <id>light-test</id>
       <properties>