adding example

playbooks/library/wait_for

@@ -75,6 +75,18 @@ author: Jeroen Hoekx
 EXAMPLES = '''
 # wait 300 seconds for port 8000 to become open on the host, don't start checking for 10 seconds
 - wait_for: port=8000 delay=10"
+
+# Wait 320 seconds for ssh to be available, don't start checking
+# for 60 seconds.  Wait 5 seconds after the check is successful.
+- name:  Wait for SSH to come up
+  local_action: >
+    wait_for 
+      host={{ host_address }}
+      state=started
+      port=22 
+      delay=60 
+      timeout=320
+      delay_after=5
 '''
 
 def main():