It turned out the previous fix ([1]) was incomplete.
Additionally, it seems we have to limit Tacker server
to one instance co-located with conductor.

[1] https://review.opendev.org/684275
commit b96ade3c

Change-Id: I9ce27d5f68f32ef59e245960e23336ae5c5db905
Closes-bug: #1853715
Related-bug: #1845142

Tacker requires config for storing CSAR vnf packages.
This patch adds it as well as relevant docs.
Only one Tacker Conductor is deployed by default due to
lack of a shared filesystem.

Change-Id: Iad391f35105e79fa9319502256528990915df9b7
Co-authored-by: Radosław Piliszek <radoslaw.piliszek@gmail.com>
Closes-Bug: #1845142

We have agreed to remove support for Oracle Linux.

http://lists.openstack.org/pipermail/openstack-discuss/2019-June/006896.html

Change-Id: If11b4ff37af936a0cfd34443e8babb952307882b

Change index to ease identify what service want to look.
Split docs into more specific folder such as networking
and storage.

Change-Id: Ic7ac12b3dd555fa5c018eeb897ccd4a5a2dfe8f3