Dump all hostFlags in hosts.dump

Dump all hostFlags in hosts.dump

Currently only certain flags are dumped in hosts.dump. Also dump the
value of hostFlags itself, so we get more information from a host dump.

Change-Id: I2d265b85e057c2d44938e1d92f4c102048c4bf1f
Reviewed-on: http://gerrit.openafs.org/869
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Dan Hyde <drh@umich.edu>
Reviewed-by: Alistair Ferguson <alistair.ferguson@mac.com>
Tested-by: Alistair Ferguson <alistair.ferguson@mac.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>