Remove py27 support for future projects

Change-Id: I740c1f7a3ef14c342b3213dca8faeb02e66736bb

README.rst

@@ -9,7 +9,7 @@ Cookiecutter template for an OpenStack project. See https://github.com/audreyr/c
 * hacking_: Enforces the OpenStack Hacking Guidelines
 * stestr_: Runs tests using stestr
 * OpenStack-Infra_: Ready for OpenStack Continuous Integration testing
-* Tox_ testing: Setup to easily test for Python 2.7, 3.5
+* Tox_ testing: Setup to easily test for Python 3.7
 * Sphinx_ docs: Documentation ready for generation and publication
 
 Usage

{{cookiecutter.repo_name}}/setup.cfg

@@ -13,10 +13,8 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.7
 
 [files]
 packages =

{{cookiecutter.repo_name}}/setup.py

@@ -16,14 +16,6 @@
 # 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: https://bugs.python.org/issue15881#msg170215
-try:
-    import multiprocessing  # noqa
-except ImportError:
-    pass
-
 setuptools.setup(
     setup_requires=['pbr'],
     pbr=True)