bgpd: fix "show ip bgp" column alignment

bgpd: fix "show ip bgp" column alignment

The "Weight" column is off:

BGP table version is 0, local router ID is 10.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, =
multipath,
              i internal, r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
   Network          Next Hop            Metric LocPrf Weight Path
*> 4.1.1.2/32       9.9.9.2                  0          32768 ?
*> 4.1.1.4/32       9.9.9.2                  0          32768 ?
Displayed  2 out of 2 total prefixes

Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>
(cherry picked from commit 65c7395b07e8c592c847d4a1e22fc89ddf448341)
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>