legacy-cross-networking-midonet-python35 is broken

[YAMAMOTO Takashi]

probably since zuul v3 transition.

eg. http://logs.openstack.org/24/519124/13/check/legacy-cross-networking-midonet-python35/a880347/job-output.txt.gz

2017-11-14 22:52:08.767923 | primary | + /usr/zuul-env/bin/zuul-cloner -m /tmp/tmp.YuKWO0QOEU --cache-dir /opt/git git://git.openstack.org openstack/networking-midonet openstack/requirements
2017-11-14 22:52:08.867102 | primary | Workspace path set to: /home/zuul/workspace
2017-11-14 22:52:08.867220 | primary | Mapping projects to workspace...
2017-11-14 22:52:08.867265 | primary | openstack/networking-midonet -> /home/zuul/workspace
2017-11-14 22:52:08.867298 | primary | openstack/requirements -> /tmp/tmp.yPCSBPcMc3
2017-11-14 22:52:08.867331 | primary | Checking overlap in destination directories...
2017-11-14 22:52:08.867353 | primary | Expansion completed.
2017-11-14 22:52:08.867404 | primary | cp -dRl /home/zuul/src/git.openstack.org/openstack/networking-midonet/. /home/zuul/workspace
2017-11-14 22:52:08.867454 | primary |
2017-11-14 22:52:08.867490 | primary | **********************************
2017-11-14 22:52:08.867537 | primary | ERROR! /home/zuul/src/git.openstack.org/openstack/requirements not found
2017-11-14 22:52:08.867574 | primary | In Zuul v3 all repositories used need to be declared
2017-11-14 22:52:08.867609 | primary | in the 'required-projects' parameter on the job.
2017-11-14 22:52:08.867633 | primary | To fix this issue, add:
2017-11-14 22:52:08.867648 | primary |
2017-11-14 22:52:08.867673 | primary | openstack/requirements
2017-11-14 22:52:08.867688 | primary |
2017-11-14 22:52:08.867713 | primary | to 'required-projects'.
2017-11-14 22:52:08.867727 | primary |
2017-11-14 22:52:08.867767 | primary | While you're at it, it's worth noting that zuul-cloner itself
2017-11-14 22:52:08.867807 | primary | is deprecated and this shim is only present for transition
2017-11-14 22:52:08.867846 | primary | purposes. Start thinking about how to rework job content to
2017-11-14 22:52:08.867881 | primary | just use the git repos that zuul will place into
2017-11-14 22:52:08.867914 | primary | /home/zuul/src/git.openstack.org directly.
2017-11-14 22:52:08.867946 | primary | **********************************
2017-11-14 22:52:08.867961 | primary |
2017-11-14 22:52:08.872008 | primary | + cleanup
2017-11-14 22:52:08.872094 | primary | + mkdir -p /home/zuul/workspace
2017-11-14 22:52:08.873635 | primary | + rm -rf /tmp/tmp.YuKWO0QOEU /tmp/tmp.yPCSBPcMc3
2017-11-14 22:52:09.329678 | primary | ERROR
2017-11-14 22:52:09.329925 | primary | {
2017-11-14 22:52:09.330020 | primary | "delta": "0:00:00.123047",
2017-11-14 22:52:09.330105 | primary | "end": "2017-11-14 22:52:08.875417",
2017-11-14 22:52:09.330191 | primary | "failed": true,
2017-11-14 22:52:09.330276 | primary | "rc": 1,
2017-11-14 22:52:09.330356 | primary | "start": "2017-11-14 22:52:08.752370"
2017-11-14 22:52:09.330435 | primary | }