Increase waiting times compat.sh and ssl-opt.sh

- Some of the CI machines don't have lsof installed yet, so rely on an sleeping
an arbitrary number of seconds while the server starts. We're seeing
occasional failures with the current delay because the CI machines are highly
loaded, which seems to indicate the current delay is not quite enough, but
hopefully not to far either, so double it.

- While at it, also double the watchdog delay: while I don't remember seeing
  much failures due to client timeout, this change doesn't impact normal
running time of the script, so better err on the safe side.

These changes don't affect the test and should only affect the false positive
rate coming from the test framework in those scripts.

tests/compat.sh

@@ -888,7 +888,7 @@ if type lsof >/dev/null 2>/dev/null; then
     }
 else
     wait_server_start() {
-        sleep 1
+        sleep 2
     }
 fi