Added configuration options for a windows service recovery settings.
New configurations include modifying the reboot message, or command
to be run when a service fails, and getting the current reboot message
or command.

Fixes golang/go#23239

Change-Id: I3e501d66e97745b7536fd654aee2bba488083e6d
Reviewed-on: https://go-review.googlesource.com/122579
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>