Use ${project.artifact} for maven3 warning prevention .... ;-)

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1197350 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/configadmin/pom.xml b/configadmin/pom.xml
index fe87aab..3571ece 100644
--- a/configadmin/pom.xml
+++ b/configadmin/pom.xml
@@ -137,7 +137,7 @@
                     <instructions>
                         <Bundle-Category>osgi</Bundle-Category>
                         <Bundle-SymbolicName>
-                            ${artifactId}
+                            ${project.artifactId}
                         </Bundle-SymbolicName>
                         <Bundle-Vendor>The Apache Software Foundation</Bundle-Vendor>
                         <Bundle-DocURL>