misc: vpp_papi- add tests, clean up pep8

Type: test

Change-Id: Ic81bd4a9eba3c89a746e7a9b9e471b59cd87fa40
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
diff --git a/.gitignore b/.gitignore
index f2068c1..8535007 100644
--- a/.gitignore
+++ b/.gitignore
@@ -94,6 +94,8 @@
 /src/vpp-api/python/build
 /src/vpp-api/python/dist
 /src/vpp-api/python/vpp_papi.egg-info
+/src/vpp_api/.tox
+/src/vpp_api/.stestr
 
 # Build files in the test directory
 /test/*.ok
@@ -103,3 +105,4 @@
 
 # No core files
 **/core
+