Rename bootstrap-os to bootstrap_os

Role names in ansible collections should not have hyphens.

roles/bootstrap_os/tasks/ubuntu.yml

@@ -0,0 +1,21 @@
+---
+- name: Import Debian bootstrap
+  import_tasks: debian.yml
+
+- name: Check unattended-upgrades file exist
+  stat:
+    path: /etc/apt/apt.conf.d/50unattended-upgrades
+  register: unattended_upgrades_file_stat
+  when:
+    - ubuntu_kernel_unattended_upgrades_disabled
+
+- name: Disable kernel unattended-upgrades
+  lineinfile:
+    path: "{{ unattended_upgrades_file_stat.stat.path }}"
+    insertafter: "Unattended-Upgrade::Package-Blacklist"
+    line: '"linux-";'
+    state: present
+  become: true
+  when:
+    - ubuntu_kernel_unattended_upgrades_disabled
+    - unattended_upgrades_file_stat.stat.exists