fix log4j to log4j2 issue (#8966)

Author: DaanHoogland

server/src/main/java/org/apache/cloudstack/storage/volume/VolumeImportUnmanageManagerImpl.java

@@ -74,7 +74,8 @@
 import org.apache.cloudstack.utils.bytescale.ByteScaleUtils;
 import org.apache.commons.collections.CollectionUtils;
 import org.apache.commons.lang3.StringUtils;
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 import javax.inject.Inject;
 import java.util.ArrayList;
@@ -84,7 +85,7 @@
 import java.util.Map;
 
 public class VolumeImportUnmanageManagerImpl implements VolumeImportUnmanageService {
-    protected Logger logger = Logger.getLogger(VolumeImportUnmanageManagerImpl.class);
+    protected Logger logger = LogManager.getLogger(VolumeImportUnmanageManagerImpl.class);
 
     @Inject
     private AccountManager accountMgr;