Rename kubespray-defaults to kubespray_defaults

Role names in ansible collection should not contains hyphens.

scripts/propagate_ansible_variables.yml

@@ -5,11 +5,11 @@
   connection: local
   gather_facts: false
   vars:
-    fallback_ip: 'bypass tasks in kubespray-defaults'
+    fallback_ip: 'bypass tasks in kubespray_defaults'
   roles:
-  - kubespray-defaults
+  - kubespray_defaults
   tasks:
-  - name: Include versions not in kubespray-defaults
+  - name: Include versions not in kubespray_defaults
     include_vars: "{{ item }}"
     loop:
     - ../roles/container-engine/docker/defaults/main.yml