zebra: check route flags when deciding whether to update existing route

[qlyoung]

Fixes #33

Signed-off-by: Quentin Young [email protected]

[NetDEF-CI]

Continous Integration Result: FAILED

See below for issues.
CI System Testrun URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-4/

This is a comment from an EXPERIMENTAL automated CI system.
For questions and feedback in regards to this CI system, please feel free to email
Martin Winter - mwinter (at) opensourcerouting.org.

Get source and apply patch from patchwork: Successful

Building Stage: Failed

Ubuntu1404 amd64 build: Successful
Debian8 amd64 build: Successful
FreeBSD11 amd64 build: Successful
OmniOS amd64 build: Successful
CentOS6 amd64 build: Successful
Openbsd60 amd64 build: Successful
NetBSD7 amd64 build: Successful
NetBSD6 amd64 build: Successful
FreeBSD9 amd64 build: Successful
Ubuntu1604 amd64 build: Successful
CentOS7 amd64 build: Successful
Ubuntu1204 amd64 build: Successful
Fedora24 amd64 build: Successful

FreeBSD10 amd64 build: Failed

DejaGNU Unittests (make check) failed for FreeBSD10 amd64 build
see DejaGNU log at /browse/FRR-FRRPULLREQ-4/artifact/CI003BUILD/ErrorLog/log_dejagnu.txt
FreeBSD10 amd64 build: Unknown Log <config.status>
URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-4/artifact/CI003BUILD/config.status/config.status

Final: Successful