server: fix templatetype during iso upload (apache#12151)

Author: shwstppr

server/src/main/java/com/cloud/template/TemplateManagerImpl.java

@@ -2381,6 +2381,9 @@ private VMTemplateVO updateTemplateOrIso(BaseUpdateTemplateOrIsoCmd cmd) {
 
     @Override
     public TemplateType validateTemplateType(BaseCmd cmd, boolean isAdmin, boolean isCrossZones, HypervisorType hypervisorType) {
+        if (cmd instanceof GetUploadParamsForIsoCmd) {
+            return TemplateType.USER;
+        }
         if (!(cmd instanceof UpdateTemplateCmd) && !(cmd instanceof RegisterTemplateCmd) && !(cmd instanceof GetUploadParamsForTemplateCmd)) {
             return null;
         }

server/src/main/java/com/cloud/vm/UserVmManagerImpl.java

@@ -4402,7 +4402,7 @@ private UserVm getUncheckedUserVmResource(DataCenter zone, String hostName, Stri
                 }
             }
 
-            if (template.getTemplateType().equals(TemplateType.SYSTEM) && !CKS_NODE.equals(vmType) && !SHAREDFSVM.equals(vmType)) {
+            if (TemplateType.SYSTEM.equals(template.getTemplateType()) && !CKS_NODE.equals(vmType) && !SHAREDFSVM.equals(vmType)) {
                 throw new InvalidParameterValueException(String.format("Unable to use system template %s to deploy a user vm", template));
             }