Unhardcode kubernetes version for k0s

Allow to pass K0S_VERSION

Related-Prod: PRODX-46480
Change-Id: Icc05e4055e4a972e328bb42b332d71de04866180
diff --git a/de/heat-templates/top.yaml b/de/heat-templates/top.yaml
index 56f939e..e09fafe 100644
--- a/de/heat-templates/top.yaml
+++ b/de/heat-templates/top.yaml
@@ -407,6 +407,9 @@
   devops_utils_refspec:
     type: string
     default: 'master'
+  k0s_version:
+    type: string
+    default: ''
 
 conditions:
   aio_deploy:
@@ -570,6 +573,7 @@
       secure_overlay_enabled: { get_param: secure_overlay_enabled }
       kubectl_version: { get_param: kubectl_version }
       devops_utils_refspec: { get_param: devops_utils_refspec }
+      k0s_version: { get_param: k0s_version }
 
   masters:
     type: OS::Heat::ResourceGroup