VPP-364 Add vpp-api/python/build to gitignore

Change-Id: I16a594ad75c085b8d0b74cf2f472f88a655253c0
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/.gitignore b/.gitignore
index 8cbf1e6..0a009d1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -72,3 +72,5 @@
 
 # Python bytecode
 *.pyc
+
+/vpp-api/python/build