Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/ipfs/templates/default/ipfs.systemd.service.erb

@@ -0,0 +1,15 @@
+[Unit]
+Description=Start ipfs
+
+[Service]
+ExecStart=/usr/local/bin/ipfs daemon --migrate --routing=dhtclient
+User=ipfs
+Group=ipfs
+Restart=always
+# Raise the ulimit (max number of open files)
+LimitNOFILE=<%= node['ipfs']['ulimit'] %>
+# Limit the memory usage
+MemoryMax=<%= node['ipfs']['memory_max'] %>
+
+[Install]
+WantedBy=multi-user.target