acl-plugin: "show acl-plugin acl" ACE# is truncated to 4 digits in output
acl-plugin: "show acl-plugin acl" ACE# is truncated to 4 digits in output

I was expecting "%4d" format string to exhibit the same behavior as
the one in C standard library, but rather than specifying _minimal_
width and expanding as necessary, it actually truncates the output.

Changing that to "%9d" should take care of pushing this surprising
difference in behavior into the domain of impossible.

Change-Id: Ia687137ca765bf9c1575af998ff11314010e81ad
Signed-off-by: Andrew Yourtchenko <eb6233fe2fbd585844f4fb8426b53b186ab379b1@gmail.com>

vpp-dev/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp