Wrong kuryr source dir in post_test_hook.sh

[Liping Mao]

post_test_hook.sh in fullstack test still using kuryr as the source dir, It need to be updated to kuryr-libnetwork.

Here is part of the error log:
http://logs.openstack.org/83/365683/1/check/gate-kuryr-libnetwork-dsvm-fullstack-nv/b4c8bb8/console.html

2016-09-05 14:48:14.075184 | 2016-09-05 14:48:14.074 | + /opt/stack/new/kuryr-libnetwork/kuryr_libnetwork/tests/contrib/post_test_hook.sh:main:L48: cd /opt/stack/new/kuryr
2016-09-05 14:48:14.077079 | 2016-09-05 14:48:14.076 | /opt/stack/new/kuryr-libnetwork/kuryr_libnetwork/tests/contrib/post_test_hook.sh: line 48: cd: /opt/stack/new/kuryr: No such file or directory

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/365827
Committed: https://git.openstack.org/cgit/openstack/kuryr-libnetwork/commit/?id=a05cc6fc45c5a76718ca40e0184a8bc2a20267d4
Submitter: Jenkins
Branch: master

commit a05cc6fc45c5a76718ca40e0184a8bc2a20267d4
Author: Liping Mao <email address hidden>
Date: Tue Sep 6 11:06:39 2016 +0800

    Fix wrong dir in post_test_hook.sh

    Change-Id: Ib289433b63ab90c1d94724439726699a5d9dedcd
    Closes-bug: #1620440