autofs: automount Arq network share

Mounting the SMB share using MacOS 'Connect to Server' is unreliable
and manual. If the connection drops, it can sometimes be impossible to
reconnect with restarting.

darwin.yml

@@ -1,6 +1,7 @@
 ---
 - hosts: localhost
   roles:
+    - { role: autofs, tags: ['autofs'] }
     - { role: dotfiles, tags: ['dotfiles'] }
     - { role: homebrew, tags: ['homebrew'] }
     - { role: fonts, tags: ['fonts'] }

roles/autofs/description

@@ -0,0 +1 @@
+Install autofs mounts for Arq backup

roles/autofs/files/auto_synology

@@ -0,0 +1 @@
+Arq -fstype=smbfs,rw,noowners,noatime ://backup:timemachine@10.1.1.3/Arq

roles/autofs/tasks/main.yml

@@ -0,0 +1,16 @@
+---
+- name: autofs | create mountpoint
+  file: path=/mnt state=directory
+
+- name: autofs | update master map
+  lineinfile:
+    dest: '/etc/auto_master'
+    line: '/mnt/Synology		auto_synology'
+
+- name: autofs | create mount map
+  copy:
+    src: '{{ role_path }}/files/auto_synology'
+    dest: '/etc/auto_synology'
+
+- name: autofs | flush cache
+  raw: sudo automount -vc