Fix doc job, pep8 error and remove py27

This commit does multiple fix
1. Doc building still use deprcated oslosphinx and incompatible
version of yasfb which lead to error-

sphinx.errors.ExtensionError: Could not import extension yasfb (exception: cannot import name 'logging')

Replace oslosphinx with openstackdocstheme to fix the error.

2. Switch py27 job with py37
3. fix the pep8 error

Change-Id: I33ad4d0a2924082b7c56ac7c7973ad02ac6e9df5

.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

doc/source/conf.py

@@ -23,7 +23,7 @@ sys.path.insert(0, os.path.abspath('../..'))
 extensions = [
     'sphinx.ext.autodoc',
     #'sphinx.ext.intersphinx',
-    'oslosphinx',
+    'openstackdocstheme',
     'yasfb',
 ]
 
@@ -75,7 +75,7 @@ pygments_style = 'sphinx'
 # html_theme_path = ["."]
 # html_theme = '_theme'
 # html_static_path = ['static']
-html_theme_options = {}
+html_theme = "openstackdocs"
 
 # Output file base name for HTML help builder.
 htmlhelp_basename = '%sdoc' % project

requirements.txt

@@ -1,7 +1,7 @@
 pbr>=0.6,<1.0
-oslosphinx>=2.2.0.0a2
-sphinx>=1.1.2,<1.2
-yasfb>=0.5.1
+openstackdocstheme
+sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2;python_version>='3.4' # BSD
+yasfb>=0.8.0
 testrepository>=0.0.18
 testtools>=0.9.34
 stestr>=2.0.0

tests/test_title.py

@@ -84,7 +84,7 @@ class TestTitles(testtools.TestCase):
     def test_template(self):
         # NOTE (e0ne): adding 'template.rst' to ignore dirs to exclude it from
         # os.listdir output
-        ignored_dirs = {'template.rst', 'api',}
+        ignored_dirs = {'template.rst', 'api'}
 
         files = ['specs/template.rst']
 

tox.ini

@@ -1,9 +1,10 @@
 [tox]
 minversion = 1.6
-envlist = docs,py27,pep8
+envlist = docs,pep8
 skipsdist = True
 
 [testenv]
+basepython = python3
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv =
@@ -13,11 +14,9 @@ deps = -r{toxinidir}/requirements.txt
 commands = stestr run --slowest {posargs}
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [testenv:docs]
-basepython = python3
 commands = python setup.py build_sphinx
 
 [testenv:spelling]
@@ -28,7 +27,6 @@ deps =
 commands = sphinx-build -b spelling doc/source doc/build/spelling
 
 [testenv:cover]
-basepython = python3
 setenv =
     PYTHON=coverage run --source specs --parallel-mode
 commands =
@@ -38,7 +36,6 @@ commands =
     coverage xml -o cover/coverage.xml
 
 [testenv:pep8]
-basepython = python3
 commands = flake8
 
 [flake8]