CLOUDSTACK-8641 - When calling "update hostpassword" API it throws NPE if the update_passwd_on_host if not informed

- On getUpdatePasswdOnHost() method, if updatePasswdOnHost is null then return false.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

api/src/org/apache/cloudstack/api/command/admin/host/UpdateHostPasswordCmd.java

@@ -67,7 +67,7 @@ public class UpdateHostPasswordCmd extends BaseCmd {
     }
 
     public Boolean getUpdatePasswdOnHost() {
-        return updatePasswdOnHost;
+        return updatePasswdOnHost == null ? false : true;
     }
 
     public String getPassword() {