Pacman keyring init

Fixes #383 (closed)

roles/install_arch/tasks/main.yml

@@ -151,11 +151,14 @@
   changed_when: "chroot_grub_mkconfig.rc == 0"
 
 - name: setup pacman-init.service on first boot
-  template: src=pacman-init.service dest=/etc/systemd/system/pacman-init.service owner=root group=root mode=0644
+  copy: src=pacman-init.service dest=/mnt/etc/systemd/system/ owner=root group=root mode=0644
 
 - name: remove generated keyring in the installation process
   file: path=/mnt/etc/pacman.d/gnupg state=absent
 
+- name: make sure /etc/machine-id is absent
+  file: path=/mnt/etc/machine-id state=absent
+
 - name: enable services inside chroot
   command: chroot /mnt systemctl enable sshd systemd-networkd systemd-resolved fstrim.timer pacman-init
   register: chroot_systemd_services