Merge "[ussuri][goal] Drop python 2.7 support"

.zuul.yaml

@@ -3,7 +3,7 @@
       - openstack-specs-jobs
     check:
       jobs:
-        - openstack-tox-py27
+        - openstack-tox-py37
     gate:
       jobs:
-        - openstack-tox-py27
+        - openstack-tox-py37

bindep.txt

@@ -0,0 +1,10 @@
+# This is a cross-platform list tracking distribution packages needed for install and tests;                                                            # see http://docs.openstack.org/infra/bindep/ for additional information.
+
+gcc [platform:rpm test]
+libffi-dev [platform:dpkg]
+libffi-devel [platform:redhat]
+libffi48-devel [platform:suse]
+virtual/libffi [platform:gentoo]
+libpcre3-dev [platform:dpkg test]
+pcre-devel [platform:rpm test]
+

tox.ini

@@ -1,9 +1,11 @@
 [tox]
-minversion = 1.6
-envlist = docs,py27
+minversion = 3.1.1
+envlist = docs,pep8
 skipsdist = True
+ignore_basepython_conflict = True
 
 [testenv]
+basepython = python3
 usedevelop = True
 setenv = VIRTUAL_ENV={envdir}
 install_command = pip install -U {opts} {packages}
@@ -11,11 +13,9 @@ deps = -r{toxinidir}/requirements.txt
 commands = stestr run --slowest {posargs}
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [testenv:docs]
-basepython = python3
 whitelist_externals =
   rm
 commands =