kvm: make two methods public

Author: weizhouapache

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

@@ -518,11 +518,11 @@ public class LibvirtComputingResource extends ServerResourceBase implements Serv
 
     public static final String CGROUP_V2 = "cgroup2fs";
 
-    protected long getHypervisorLibvirtVersion() {
+    public long getHypervisorLibvirtVersion() {
         return hypervisorLibvirtVersion;
     }
 
-    protected long getHypervisorQemuVersion() {
+    public long getHypervisorQemuVersion() {
         return hypervisorQemuVersion;
     }