Merge ~sylvain-pineau/plainbox-provider-certification-server:update_requirements into plainbox-provider-certification-server:master

[Sylvain Pineau]

Update requirements to depend on checkbox-ng

Requires https://code.launchpad.net/~sylvain-pineau/checkbox-ng/+git/checkbox-ng/+merge/336417

[Jonathan Cave (jocave)]

review: Approve

[Devices Certification Bot (ce-certification-qa)]

The merge was fine but running tests failed.

[trusty] starting container
[trusty] (timing) 0.00user 0.00system 0:00.15elapsed 5%CPU (0avgtext+0avgdata 4824maxresident)k
[trusty] (timing) 0inputs+72outputs (0major+1419minor)pagefaults 0swaps
[trusty] provisioning container
[trusty] Unable to provision requirements in container!
[trusty] stdout: https://paste.ubuntu.com/26472400/
[trusty] stderr: https://paste.ubuntu.com/26472401/
[trusty] Fixing file permissions in source directory
[trusty] Destroying failed container to reclaim resources
Destroyed container trusty-testing
[xenial] starting container
[xenial] (timing) 0.00user 0.00system 0:00.13elapsed 6%CPU (0avgtext+0avgdata 4980maxresident)k
[xenial] (timing) 0inputs+72outputs (0major+1417minor)pagefaults 0swaps
[xenial] provisioning container
[xenial] Unable to provision requirements in container!
[xenial] stdout: https://paste.ubuntu.com/26472402/
[xenial] stderr: https://paste.ubuntu.com/26472403/
[xenial] Fixing file permissions in source directory
[xenial] Destroying failed container to reclaim resources
Destroyed container xenial-testing

review: Needs Fixing

diff --git a/requirements/deb-core.txt b/requirements/deb-core.txt
index e26bc74..2aade11 100644
--- a/requirements/deb-core.txt
+++ b/requirements/deb-core.txt
@@ -1,2 +1,2 @@
-plainbox
+checkbox-ng
 plainbox-provider-checkbox