Improve Pulse ESP setup reliability.
Improve Pulse ESP setup reliability.

Sometimes, the server is slow to process the ESP config so our first probes
don't elicit a response. Abuse the licensing information packet which comes
after the connection is set up, and send a second set of probes when it
arrives.

Perhaps we should actually send three probes, half a second apart.

Signed-off-by: David Woodhouse <97b3379caa91f4ee97e44013ae4dc6350540fa9d@infradead.org>

brandt/openconnect,brandt/openconnect,brandt/openconnect,brandt/openconnect