Fix KVM import unmanaged instance (apache#8433)

This PR fixes KVM manage/unmanage functionality on 4.19.0 RC1 - was introduced on apache#7976 but the latest merge commits on the PR removed the execution for KVM

Author: nvazquez

server/src/main/java/org/apache/cloudstack/vm/UnmanagedVMsManagerImpl.java

@@ -1322,7 +1322,6 @@ private UserVmResponse baseImportInstance(ImportUnmanagedInstanceCmd cmd) {
         ActionEventUtils.onStartedActionEvent(userId, owner.getId(), EventTypes.EVENT_VM_IMPORT,
                 cmd.getEventDescription(), null, null, true, 0);
 
-        //TODO: Placeholder for integration with KVM ingestion and KVM extend unmanage/manage VMs
         if (cmd instanceof ImportVmCmd) {
             ImportVmCmd importVmCmd = (ImportVmCmd) cmd;
             if (StringUtils.isBlank(importVmCmd.getImportSource())) {
@@ -1338,8 +1337,8 @@ private UserVmResponse baseImportInstance(ImportUnmanagedInstanceCmd cmd) {
                         details, importVmCmd, forced);
             }
         } else {
-            if (cluster.getHypervisorType() == Hypervisor.HypervisorType.VMware) {
-                userVm = importUnmanagedInstanceFromVmwareToVmware(zone, cluster, hosts, additionalNameFilters,
+            if (List.of(Hypervisor.HypervisorType.VMware, Hypervisor.HypervisorType.KVM).contains(cluster.getHypervisorType())) {
+                userVm = importUnmanagedInstanceFromHypervisor(zone, cluster, hosts, additionalNameFilters,
                         template, instanceName, displayName, hostName, caller, owner, userId,
                         serviceOffering, dataDiskOfferingMap,
                         nicNetworkMap, nicIpAddressMap,
@@ -1458,13 +1457,13 @@ public UserVmResponse importVm(ImportVmCmd cmd) {
         }
     }
 
-    private UserVm importUnmanagedInstanceFromVmwareToVmware(DataCenter zone, Cluster cluster,
-                                                             List<HostVO> hosts, List<String> additionalNameFilters,
-                                                             VMTemplateVO template, String instanceName, String displayName,
-                                                             String hostName, Account caller, Account owner, long userId,
-                                                             ServiceOfferingVO serviceOffering, Map<String, Long> dataDiskOfferingMap,
-                                                             Map<String, Long> nicNetworkMap, Map<String, Network.IpAddresses> nicIpAddressMap,
-                                                             Map<String, String> details, Boolean migrateAllowed, List<String> managedVms, boolean forced) {
+    private UserVm importUnmanagedInstanceFromHypervisor(DataCenter zone, Cluster cluster,
+                                                         List<HostVO> hosts, List<String> additionalNameFilters,
+                                                         VMTemplateVO template, String instanceName, String displayName,
+                                                         String hostName, Account caller, Account owner, long userId,
+                                                         ServiceOfferingVO serviceOffering, Map<String, Long> dataDiskOfferingMap,
+                                                         Map<String, Long> nicNetworkMap, Map<String, Network.IpAddresses> nicIpAddressMap,
+                                                         Map<String, String> details, Boolean migrateAllowed, List<String> managedVms, boolean forced) {
         UserVm userVm = null;
         for (HostVO host : hosts) {
             HashMap<String, UnmanagedInstanceTO> unmanagedInstances = getUnmanagedInstancesForHost(host, instanceName, managedVms);