Remove name from project stanza

This is now optional, and should be discouraged in in-repo configs.

Additionally:
* Block 1.18 release of openstackdocstheme, it does not work with the
 sphinx version. This change is needed for building.
* Include file from proper branch - the file has been removed from
  master branch.

Change-Id: I692c4f2e38ad4acbecfe02d03068ea293b04077f
(cherry picked from commit 4434ba8c4b)

.zuul.yaml

@@ -113,7 +113,6 @@
 
 # Configuration for this repository, determines which jobs to run.
 - project:
-    name: openstack/openstack-manuals
     templates:
       - openstack-manuals-build-translation
       - openstack-manuals-jobs

doc/config-reference/source/shared-file-systems/samples/policy.json.rst

@@ -7,4 +7,4 @@ to the Shared File Systems service.
 
 .. remote-code-block:: json
 
-   https://git.openstack.org/cgit/openstack/manila/plain/etc/manila/policy.json
+   https://git.openstack.org/cgit/openstack/manila/plain/etc/manila/policy.json?h=stable/ocata

test-requirements.txt

@@ -10,7 +10,7 @@ beautifulsoup4 # MIT
 Jinja2>=2.8 # BSD License (3 clause)
 openstack-doc-tools>=1.1.0,<=1.5.0 # Apache-2.0
 sphinx>=1.5.1,<1.6 # BSD
-openstackdocstheme>=1.7.0 # Apache-2.0
+openstackdocstheme>=1.7.0,<1.8.0 # Apache-2.0
 doc8 # Apache-2.0
 requests>=2.10.0,!=2.12.2  # Apache-2.0
 requestsexceptions>=1.1.1 # Apache-2.0