Cleanup py27 support

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:
  * Wheel is not needed for python 3 only repo
  * Some other sections are obsolete
- Update classifiers
- Update requirements, no need for python_version anymore
- Remove sphinx requirements, the repo has no docs

Change-Id: I3ee6abac9b5c4c639521bb2834a104bc53ce93ed

lower-constraints.txt

@@ -65,7 +65,6 @@ oslo.policy==1.30.0
 oslo.serialization==2.18.0
 oslo.service==1.24.0
 oslo.utils==3.33.0
-oslosphinx==4.7.0
 osprofiler==1.4.0
 Paste==2.0.2
 PasteDeploy==1.5.0
@@ -107,8 +106,6 @@ semantic-version==2.3.1
 simplejson==3.5.1
 six==1.10.0
 snowballstemmer==1.2.1
-Sphinx==1.6.2
-sphinxcontrib-websupport==1.0.1
 statsd==3.2.1
 stevedore==1.20.0
 tenacity==3.2.1

setup.cfg

@@ -4,7 +4,8 @@ summary = Monasca Plugin for Horizon
 description-file = README.rst
 author = OpenStack
 author-email = openstack-discuss@lists.openstack.org
-home-page = https://github.com/openstack/monasca-ui
+home-page = https://opendev.org/openstack/monasca-ui
+python-requires = >=3.6
 classifier =
     Environment :: Console
     Intended Audience :: Information Technology
@@ -12,6 +13,8 @@ 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
@@ -22,11 +25,3 @@ packages =
 
 [pbr]
 autodoc_index_modules = True
-
-[build_sphinx]
-all_files = 1
-build-dir = doc/build
-source-dir = doc/source
-
-[wheel]
-universal = 1

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

@@ -8,9 +8,6 @@ coverage!=4.4,>=4.0 # Apache-2.0
 mock>=2.0.0 # BSD
 nodeenv>=0.9.4 # BSD
 selenium>=2.50.1 # Apache-2.0
-# Docs Requirements
-sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
-oslosphinx>=4.7.0 # Apache-2.0
 
 # Horizon
 pytest>=5.3.5 # MIT