LU-13836 lnet: Display correct route aliveness

LU-13836 lnet: Display correct route aliveness

jt_ptl_print_routes() needs to be updated to interpret
data.cfg_config_u.cfg_route.rtr_flags correctly.

Test-Parameters: trivial
Fixes: 2832478194 ("LU-13029 lnet: fix asym routing with multi-hop")
HPE-bug-id: LUS-9121
Signed-off-by: Chris Horn <chris.horn@hpe.com>
Change-Id: I796759293c6b25794f2092c06fee2981db6a7d48
Reviewed-on: https://review.whamcloud.com/39543
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Neil Brown <neilb@suse.de>
Reviewed-by: Oleg Drokin <green@whamcloud.com>