fix checkstyle and compile error

Author: Glover, Rene (rg9975)

engine/storage/snapshot/src/test/java/org/apache/cloudstack/storage/vmsnapshot/VMSnapshotStrategyKVMTest.java

@@ -171,7 +171,7 @@ private void initialiseUsageEventUtils() {
         ReflectionTestUtils.setField(usageEventUtils, "accountDao", accountDao);
         ReflectionTestUtils.setField(usageEventUtils, "dcDao", dataCenterDao);
         ReflectionTestUtils.setField(usageEventUtils, "configDao", configDao);
-        usageEventUtils.init();
+        ReflectionTestUtils.invokeMethod(usageEventUtils, "init");
 
         Mockito.lenient().when(usageEventDao.persist(Mockito.any())).thenAnswer(invocation -> invocation.getArgument(0));
         Mockito.lenient().doNothing().when(usageEventDao).saveDetails(Mockito.anyLong(), Mockito.anyMap());

plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtMigrateVolumeCommandWrapper.java

@@ -27,7 +27,6 @@
 import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
 import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef;
 import com.cloud.hypervisor.kvm.resource.disconnecthook.VolumeMigrationCancelHook;
-import com.cloud.hypervisor.kvm.resource.wrapper.LibvirtUtilitiesHelper;
 import com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk;
 import com.cloud.hypervisor.kvm.storage.KVMStoragePool;
 import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager;