Switch to RTD theme for gnocchi.xyz

Change-Id: If863329708b4c45f8ce9f57c6bf699ec153c7680

doc/source/conf.py

@@ -105,21 +105,9 @@ html_theme = 'openstack'
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
-if html_theme == "bootstrap":
-    html_theme_options = {
-        'navbar_class': "navbar navbar-inverse",
-        'navbar_site_name': "Documentation",
-        'navbar_links': [
-            ("Launchpad project", "https://launchpad.net/gnocchi", True),
-            ("Bug tracking", "https://bugs.launchpad.net/gnocchi", True),
-            ("Git", "http://github.com/openstack/gnocchi", True),
-        ],
-        'navbar_sidebarrel': False,
-        'navbar_pagenav': False,
-        'globaltoc_depth': 2,
-    }
-    import sphinx_bootstrap_theme
-    html_theme_path = [sphinx_bootstrap_theme.get_html_theme_path()]
+if html_theme == "sphinx_rtd_theme":
+    import sphinx_rtd_theme
+    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 else:
     html_theme_path = [os.path.join(os.path.dirname(oslosphinx.__file__),
                                     'theme')]

tox.ini

@@ -71,6 +71,6 @@ commands = doc8 --ignore-path doc/source/rest.rst doc/source
 
 [testenv:docs-gnocchi.xyz]
 deps = .[file,postgresql,test,doc]
-       sphinx_bootstrap_theme
+       sphinx_rtd_theme
 setenv = GNOCCHI_TEST_STORAGE_DRIVER=file
-commands = {toxinidir}/setup-postgresql-tests.sh sphinx-build -D html_theme=bootstrap doc/source doc/build
+commands = {toxinidir}/setup-postgresql-tests.sh sphinx-build -D html_theme=sphinx_rtd_theme doc/source doc/build