Add a backlog folder

The backlog dir is meant to be used for incomplete ideas that it'd be
worth looking at in the future. Either these ideas are brought from
folks from the community or Zaqar's team itself.

Change-Id: I144e77ec201849d62bbe0dbbea273736c4d589d6

specs/backlog-template.rst

@@ -0,0 +1,90 @@
+..
+  This template should be in ReSTructured text. The filename in the git
+  repository should match the launchpad URL, for example a URL of
+  https://blueprints.launchpad.net/zaqar/+spec/awesome-thing should be named
+  awesome-thing.rst.
+
+  Please do not delete any of the sections in this
+  template.  If you have nothing to say for a whole section, just write: None
+
+  For help with syntax, see http://sphinx-doc.org/rest.html
+  To test out your formatting, see http://www.tele3.cz/jbar/rest/rest.html
+
+=============================
+ The title of your blueprint
+=============================
+
+Include the URL of your launchpad blueprint:
+
+https://blueprints.launchpad.net/zaqar/+spec/example
+
+Introduction paragraph -- why are we doing anything?
+
+Problem description
+===================
+
+A detailed description of the problem.
+
+Proposed change
+===============
+
+Here is where you cover the change you propose to make in detail. How do you
+propose to solve this problem?
+
+If this is one part of a larger effort make it clear where this piece ends. In
+other words, what's the scope of this effort?
+
+Drawbacks
+---------
+
+Are there any drawbacks in this proposal? Does it change things in the
+API? Will it have an impact in critical areas? Will it make other
+areas more complex?
+
+Please, answer any of the questions above or elaborate on the
+drawbacks of this proposal if there're any.
+
+Alternatives
+------------
+
+This is an optional section, where it does apply we'd just like a demonstration
+that some thought has been put into why the proposed approach is the best one.
+
+Implementation
+==============
+
+Assignee(s)
+-----------
+
+Who is leading the writing of the code? Or is this a blueprint where you're
+throwing it out there to see who picks it up?
+
+If more than one person is working on the implementation, please designate the
+primary author and contact.
+
+Primary assignee:
+  <launchpad-id or None>
+
+Can list additional ids if they intend on doing substantial implementation work
+on this blueprint.
+
+Work Items
+----------
+
+Work items or tasks -- break the feature up into the things that need to be
+done to implement it. Those parts might end up being done by different people,
+but we're mostly trying to understand the timeline for implementation.
+
+
+Dependencies
+============
+
+- Include specific references to specs and/or blueprints in zaqar, or in other
+  projects, that this one either depends on or is related to.
+
+.. note::
+
+  This work is licensed under a Creative Commons Attribution 3.0
+  Unported License.
+  http://creativecommons.org/licenses/by/3.0/legalcode
+

specs/backlog/index.rst

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+=======================
+ Liberty Specifications
+=======================
+
+.. toctree::
+   :glob:
+   :maxdepth: 2
+
+..   *
+

specs/index.rst

@@ -9,3 +9,4 @@
    juno/index
    kilo/index
    liberty/index
+   backlog/index