switch from oslosphinx to openstackdocstheme

Change-Id: I7522d14d4e340f0882e41bed3528f90bbf74c2af
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

doc/source/conf.py

@@ -17,9 +17,15 @@ extensions = [
     'sphinx.ext.extlinks',
     'sphinx.ext.inheritance_diagram',
     'sphinx.ext.viewcode',
-    'oslosphinx'
+    'openstackdocstheme'
 ]
 
+# openstackdocstheme options
+repository_name = 'openstack/taskflow'
+bug_project = 'taskflow'
+bug_tag = ''
+html_last_updated_fmt = '%Y-%m-%d %H:%M'
+
 # autodoc generation is a bit aggressive and a nuisance when doing heavy
 # text edit cycles.
 # execute "export SPHINX_DEBUG=1" in your terminal to disable
@@ -66,20 +72,12 @@ extlinks = {
 # The theme to use for HTML and HTML Help pages.  Major themes that come with
 # Sphinx are currently 'default' and 'sphinxdoc'.
 # html_theme_path = ["."]
-# html_theme = '_theme'
-html_static_path = ['static']
+html_theme = 'openstackdocs'
+# html_static_path = ['static']
 
 # Output file base name for HTML help builder.
 htmlhelp_basename = '%sdoc' % project
 
-git_cmd = ["git", "log", "--pretty=format:'%ad, commit %h'", "--date=local",
-           "-n1"]
-try:
-    html_last_updated_fmt = subprocess.check_output(git_cmd).decode('utf-8')
-except Exception:
-    warnings.warn('Cannot get last updated time from git repository. '
-                  'Not setting "html_last_updated_fmt".')
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass
 # [howto/manual]).