Cleanup py27 support

This repo is now testing only with Python 3, so let's make
a few cleanups:
- Remove python 2.7 stanza from setup.py
- Add requires on python >= 3.6 to setup.cfg so that pypi and pip
  know about the requirement
- Remove obsolete sections from setup.cfg
- Update classifiers
- Switch to using sphinx-build
- Use newer openstackdocstheme and Sphinx versions
- Cleanup */source/conf.py to remove now obsolete content.
- Remove install_command from tox.ini, the default is fine
- Remove mccabe from lower-constraints, we don't need it there,
  it is constrainted by hacking.
- Add xml and xslt libs to bindep, these are needed for building
  some requirements

Change-Id: Ia78b92c3b807623e70d85c3bce44e3b7011ca282

bindep.txt

@@ -5,3 +5,7 @@
 libvirt-dev [platform:dpkg]
 python-libvirt [platform:dpkg]
 pkg-config [platform:dpkg]
+
+libxml2-dev [platform:dpkg test]
+libxslt-devel [platform:rpm test]
+libxslt1-dev [platform:dpkg test]

doc/requirements.txt

@@ -1,8 +1,8 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
+sphinx>=2.0.0,!=2.1.0 # BSD
-openstackdocstheme>=1.24.0 # Apache-2.0
+openstackdocstheme>=2.0.0 # Apache-2.0
 
 # releasenotes
 reno>=2.5.0 # Apache-2.0

lower-constraints.txt

@@ -35,7 +35,6 @@ keystoneauth1==3.4.0
 libvirt-python==3.5.0
 linecache2==1.0.0
 MarkupSafe==1.0
-mccabe==0.2.1
 mock==2.0.0
 monotonic==1.4
 mox3==0.25.0
@@ -44,6 +43,7 @@ munch==2.2.0
 netaddr==0.7.19
 netifaces==0.10.6
 lxml==3.4.1
+openstackdocstheme==2.0.0
 openstacksdk==0.13.0
 os-client-config==1.29.0
 os-service-types==1.2.0
@@ -60,7 +60,6 @@ oslo.privsep==1.23.0
 oslo.serialization==2.25.0
 oslo.service==1.24.0
 oslo.utils==3.33.0
-oslosphinx==4.7.0
 oslotest==3.2.0
 packaging==17.1
 Paste==2.0.3
@@ -92,7 +91,7 @@ Routes==2.4.1
 simplejson==3.13.2
 six==1.10.0
 snowballstemmer==1.2.1
-Sphinx==1.6.2
+Sphinx==2.0.0
 sphinxcontrib-websupport==1.0.1
 statsd==3.2.2
 stestr==2.0.0

setup.cfg

@@ -6,6 +6,7 @@ description-file =
 author = OpenStack
 author-email = openstack-dev@lists.openstack.org
 home-page = http://www.openstack.org/
+python-requires = >=3.6
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -13,6 +14,8 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
@@ -41,14 +44,6 @@ hostmonitor.driver =
     simple = masakarimonitors.hostmonitor.host_handler.handle_host:HandleHost
     default = masakarimonitors.hostmonitor.host_handler.handle_host:HandleHost
 
-[build_sphinx]
-source-dir = doc/source
-build-dir = doc/build
-all_files = 1
-
-[upload_sphinx]
-upload-dir = doc/build/html
-
 [compile_catalog]
 directory = masakarimonitors/locale
 domain = masakarimonitors
@@ -62,8 +57,3 @@ input_file = masakarimonitors/locale/masakarimonitors.pot
 keywords = _ gettext ngettext l_ lazy_gettext
 mapping_file = babel.cfg
 output_file = masakarimonitors/locale/masakarimonitors.pot
-
-[build_releasenotes]
-all_files = 1
-build-dir = releasenotes/build
-source-dir = releasenotes/source

setup.py

@@ -13,17 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
-# In python < 2.7.4, a lazy loading of package `pbr` will break
-# setuptools if some other modules registered functions in `atexit`.
-# solution from: http://bugs.python.org/issue15881#msg170215
-try:
-    import multiprocessing  # noqa
-except ImportError:
-    pass
-
 setuptools.setup(
     setup_requires=['pbr>=2.0.0'],
     pbr=True)

test-requirements.txt

@@ -6,8 +6,8 @@ hacking>=3.0,<3.1.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
 python-subunit>=1.0.0 # Apache-2.0/BSD
-sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
+sphinx>=2.0.0,!=2.1.0 # BSD
-oslosphinx>=4.7.0 # Apache-2.0
+openstackdocstheme>=2.0.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 os-testr>=1.0.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD

tox.ini

@@ -58,10 +58,10 @@ commands =
 
 [testenv:docs]
 deps = -r{toxinidir}/doc/requirements.txt
-commands = python setup.py build_sphinx
+commands = sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:releasenotes]
-deps = -r{toxinidir}/doc/requirements.txt
+deps = {[testenv:docs]deps}
 commands =
   rm -fr releasenotes/build
   sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html