Add openstack-doc-tools

openstack-doc-tools is used in the documentation and api
repositories. Latest release is 0.3.

Add it to global-requirements and add list of repositories using
it to projects.txt.

Change-Id: Id6a79d3596c6cfaab92cfb8fc89d4298db61b7f0

global-requirements.txt

@@ -131,6 +131,7 @@ nose
 nose-exclude
 nosehtmloutput>=0.0.3
 nosexcover
+openstack-doc-tools>=0.3
 openstack.nose_plugin>=0.7
 pep8==1.4.5
 proboscis==1.2.5.3

projects.txt

@@ -1,14 +1,23 @@
+openstack/api-site
 openstack/ceilometer
 openstack/cinder
+openstack/compute-api
+openstack/database-api
 openstack/django_openstack_auth
 openstack/glance
 openstack/diskimage-builder
 openstack/heat
 openstack/horizon
+openstack/identity-api
+openstack/image-api
 openstack/ironic
 openstack/keystone
 openstack/neutron
 openstack/nova
+openstack/object-api
+openstack/openstack-doc-tools
+openstack/openstack-manuals
+openstack/operations-guide
 openstack/os-apply-config
 openstack/os-collect-config
 openstack/os-refresh-config
@@ -34,6 +43,7 @@ openstack/savanna-extra
 openstack/swift
 openstack/tempest
 openstack/trove
+openstack/volume-api
 openstack-dev/devstack
 openstack-dev/hacking
 openstack-infra/devstack-gate