Install maven-enforcer-plugin for ITs in maven-enforcer-extension

We need use extraArtifacts to be sure that plugin is installed for ITs

Author: slawekjaranowski

maven-enforcer-extension/pom.xml

@@ -69,6 +69,11 @@
               <postBuildHookScript>verify</postBuildHookScript>
               <localRepositoryPath>${project.build.directory}/local-repo</localRepositoryPath>
               <settingsFile>src/it/mrm/settings.xml</settingsFile>
+              <extraArtifacts>
+                <!-- artifacts in test scope is not installed by default -->
+                <!-- we only need this one not everything from test scope -->
+                <extraArtifact>org.apache.maven.plugins:maven-enforcer-plugin:${project.version}</extraArtifact>
+              </extraArtifacts>
               <goals>
                 <goal>validate</goal>
               </goals>