deb/rpm version conflicts for dask/distributed deps

[Alexandru Avadanii]

After artifacts from [1] were pushed to the public mirror, and corresponding code to enable them was merged as part of [2], Fuel Master node can no longer be deployed.
We observed this regression in Fuel@OPNFV (also in Armband@OPNFV), and CI tests confirm my short investigation:
- Nailgun DB sync (/usr/bin/nailgun_syncdb) fails due to missing packages;
- installing required packaged by hand leads to more missing dependecies;
- trying to install said missing deps by hand leads to version mismatch, since distributed==1.16.0 requires newer versions than existing RPMs in our repos;

I tinkered a little with this, and here's how I got DB sync to stop complaining about missing deps:

# nailgun_syncdb requires distributed, which is not installed on master node (?)
$ yum install python-distributed
# distributed requirement, can be solved by installing our RPM
$ yum install python-sortedcollections
# python packages below are available as RPMs, but their version is too old (!)
$ yum install pip
$ pip install zict==0.1.1
$ pip install click==6.6
$ pip install cloudpickle==0.2.2
$ pip install tornado==4.2
# It would have clearly been simpler to just `pip install -Ur distributed==1.16.0`

[1] https://bugs.launchpad.net/fuel/+bug/1673032
[2] https://review.openstack.org/#/q/topic:bp/distributed-serialization+status:merged
[3] https://ci.fuel-infra.org/job/10.0-community.main.ubuntu.bvt_2/1348/console

[Vladimir Khlyunev (vkhlyunev)]

BVT is broken now, traceback from /var/log/puppet/bootstrap_admin_node.log

http://paste.openstack.org/show/604263/

tldr:
pkg_resources.DistributionNotFound: The 'distributed==1.16.0' distribution was not found and is required by nailgun

[Vladimir Kozhukalov (kozhukalov)]

https://review.openstack.org/#/c/450103/

[Fuel Devops McRobotson (fuel-devops-robot)]

Related fix proposed to branch: 10.0/newton
Change author: Ivan Suzdal <email address hidden>
Review: https://review.fuel-infra.org/32541

[Fuel Devops McRobotson (fuel-devops-robot)]

Reviewed: https://review.fuel-infra.org/32541
Submitter: Pkgs Jenkins <email address hidden>
Branch: 10.0/newton

Commit: e697aedeb1b5b33c3ee46ed0c6e2f8f105143583
Author: Ivan Suzdal <email address hidden>
Date: Mon Mar 27 09:58:12 2017

Update python-tornado to 4.4.2

Cherry-pick from master

Change-Id: I3b84b4005e1e4c5231bc5e37b5735f1bb738bda7
Related-Bug: #1676197

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/450324

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: stable/newton
Review: https://review.openstack.org/450325

[Alexey Shtokolov (ashtokolov)]

Fixed by https://review.openstack.org/#/c/450373/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/450324
Committed: https://git.openstack.org/cgit/openstack/fuel-web/commit/?id=962f009fcecf5f2a64e812febbc989343ad1ccc3
Submitter: Jenkins
Branch: master

commit 962f009fcecf5f2a64e812febbc989343ad1ccc3
Author: Vladimir Kuklin <email address hidden>
Date: Mon Mar 27 19:13:26 2017 +0300

    Fix typo in packages list for distributed serialization

    Change-Id: Iacc987275064609f5c1f3c731073baa8a345e7d3
    Related-bug: #1676197

[OpenStack Infra (hudson-openstack)]

Change abandoned by Alexander Kislitsky (<email address hidden>) on branch: stable/newton
Review: https://review.openstack.org/450325
Reason: Doesn't required due to reverted https://review.openstack.org/#/c/450320/

[TatyanaGladysheva (tgladysheva)]

Verified on 10.0 build #1461.

Latest runs of bvt job with fix are passed (since #1445):
https://product-ci.infra.mirantis.net/view/10.0/job/10.0.main.ubuntu.bvt_2/1461/