SLING-9944 Bundle configurations and reference via classpath protocol

use feature sling-configs
diff --git a/src/main/java/org/apache/sling/karaf/testing/KarafTestSupport.java b/src/main/java/org/apache/sling/karaf/testing/KarafTestSupport.java
index 0d755e7..c3759dc 100644
--- a/src/main/java/org/apache/sling/karaf/testing/KarafTestSupport.java
+++ b/src/main/java/org/apache/sling/karaf/testing/KarafTestSupport.java
@@ -145,7 +145,7 @@
             editConfigurationFilePut("etc/org.apache.karaf.management.cfg", "rmiServerPort", Integer.toString(rmiServerPort)),
             editConfigurationFilePut("etc/org.apache.karaf.shell.cfg", "sshPort", Integer.toString(sshPort)),
             editConfigurationFilePut("etc/org.apache.felix.http.cfg", "org.osgi.service.http.port", Integer.toString(httpPort)),
-            mavenBundle().groupId("org.apache.sling").artifactId("org.apache.sling.karaf-configs").versionAsInProject(),
+            addSlingFeatures("sling-configs"),
             mavenBundle().groupId("org.ops4j.pax.tinybundles").artifactId("tinybundles").versionAsInProject(),
             mavenBundle().groupId("biz.aQute.bnd").artifactId("biz.aQute.bndlib").versionAsInProject(),
             karafTestSupportBundle()