Rename bootstrap-os to bootstrap_os

Role names in ansible collections should not have hyphens.

roles/kubernetes/preinstall/tasks/0050-create_directories.yml

@@ -11,7 +11,7 @@
     - kubelet
     - kube-controller-manager
     - kube-apiserver
-    - bootstrap-os
+    - bootstrap_os
     - apps
     - network
     - master    # master tag is deprecated and replaced by control-plane
@@ -35,7 +35,7 @@
     - kubelet
     - kube-controller-manager
     - kube-apiserver
-    - bootstrap-os
+    - bootstrap_os
     - apps
     - network
     - master    # master tag is deprecated and replaced by control-plane
@@ -86,7 +86,7 @@
     - weave
     - kube-ovn
     - kube-router
-    - bootstrap-os
+    - bootstrap_os
 
 - name: Create calico cni directories
   file:
@@ -102,7 +102,7 @@
   tags:
     - network
     - calico
-    - bootstrap-os
+    - bootstrap_os
 
 - name: Create local volume provisioner directories
   file: