There is a sleep in a test to allow a socket close to
propagate through the kernel stack. This is only required
on FreeBSD, so limit it's use to FreeBSD.
This results in slightly faster unit test run times on Linux.
Change-Id: I495d8b91e7247d0757650c4993d18f707c524a22
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/475312
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
b0472ac853