FELIX-605 include service tracker as private package

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@667421 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/configadmin/pom.xml b/configadmin/pom.xml
index 9eab19b..8dc3f57 100644
--- a/configadmin/pom.xml
+++ b/configadmin/pom.xml
@@ -68,7 +68,8 @@
                             org.osgi.service.cm;version=1.2
                         </Export-Package>
                         <Private-Package>
-                            org.apache.felix.cm.impl
+                            org.apache.felix.cm.impl,
+                            org.osgi.util.tracker
                         </Private-Package>
                         <Bundle-Activator>
                             org.apache.felix.cm.impl.ConfigurationManager