fix(lint): convert sshd restart to handler, add pipefail to btrfs subvol set

roles/partitioning/tasks/btrfs.yml

@@ -59,9 +59,12 @@
         label: "{{ item.subvol }}"
 
     - name: Set default btrfs subvolume to @
-      ansible.builtin.shell: >-
-        btrfs subvolume list /mnt | awk '/ path @$/ {print $2}'
-        | xargs -I{} btrfs subvolume set-default {} /mnt
+      ansible.builtin.shell:
+        cmd: >-
+          set -o pipefail &&
+          btrfs subvolume list /mnt | awk '/ path @$/ {print $2}'
+          | xargs -I{} btrfs subvolume set-default {} /mnt
+        executable: /bin/bash
       register: partitioning_btrfs_default_result
       changed_when: partitioning_btrfs_default_result.rc == 0