wait-for-host: PB to wait for a host to come up

This playbook just waits for a machine to become available.  It's useful
when running Ansible immediately after creating a new machine.

wait-for-host.yml

@@ -0,0 +1,10 @@
+- hosts: all
+  gather_facts: false
+  tasks:
+  - name: wait for host to come up
+    become: false
+    delegate_to: localhost
+    connection: local
+    wait_for:
+      host: '{{ ansible_host | d(inventory_hostname) }}'
+      port: '{{ ansible_port | d(22) }}'