Change default test repository parent directory to `./test_data/` to avoid conflict with stackviz unit tests

README.rst

@@ -74,6 +74,7 @@ Log locations are configured along with normal Django settings in
 :code:`stackviz/settings.py`. Several different types of logs are rendered by
 StackViz:
 
-* Tempest (`testr` repositories): :code:`./`, :code:`/opt/stack/tempest/`
+* Tempest (`testr` repositories): :code:`./test_data/`,
+  :code:`/opt/stack/tempest/`
 * DevStack: *TODO*
 * Dstat: *TODO*

stackviz/settings.py

@@ -89,7 +89,7 @@ TEMPLATE_DIRS = [
 
 TEST_REPOSITORIES = [
     '/opt/stack/tempest/',
-    BASE_DIR
+    os.path.join(BASE_DIR, 'test_data')
 ]
 
 DSTAT_CSV = 'dstat.log'