Rename vpe binary name to avoid collision with latex

Change-Id: I34a46b9ebbc0e36486fbef528b34ea1c3be2e8be
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/test/README b/test/README
index 862541a..40154bb 100644
--- a/test/README
+++ b/test/README
@@ -7,7 +7,7 @@
  - install python requirements for this project by executing:
     # pip install -r requirements.txt
  - make sure user mentioned in topology.py has NOPASSWD sudo access to
-    vpe_api_test
+    vpp_api_test
 
 
  Done.