Fix reboot handler

Author: Alex-Welsh

etc/kayobe/ansible/pci-passthrough.yml

@@ -34,7 +34,7 @@
       become: true
       notify:
         - Regenerate initramfs
-        - Reboot
+        - reboot
 
     - name: Add vfio to modules-load.d
       ansible.builtin.blockinfile:
@@ -63,7 +63,7 @@
         create: true
       become: true
       notify:
-        - Reboot
+        - reboot
         - Regenerate initramfs
 
     - name: Ignore unsupported model specific registers
@@ -90,7 +90,7 @@
         group: root
         create: true
       become: true
-      notify: Reboot
+      notify: reboot
 
     - name: Add vfio-pci.ids kernel args
       ansible.builtin.include_role:
@@ -126,7 +126,9 @@
       changed_when: true
       when: ansible_facts.os_family == 'Debian'
 
-    - name: Reboot
+    # NOTE(Alex-Welsh): This handler must be named "reboot" (case sensitive)
+    # because it is called by stackhpc.grubcmdline
+    - name: reboot
       become: true
       ansible.builtin.reboot:
         reboot_timeout: "{{ reboot_timeout_s }}"