use copy instead of template

fix destination

roles/install_arch/tasks/main.yml

@@ -151,7 +151,7 @@
   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