at end of do_syncrepl; this fixes the problem of syncrepl never starting
if the master isn't up. Set sync interval to 60 seconds in persist mode;
it will retry connecting to the master when the master isn't up. Fail on
SASL at config time instead of at runtime when SASL is not enabled.

Split glue test in two.
Remove (slurpd) subtree replication test.
Reorder syncrepl/proxy tests

A little rough around the edges still.