Add generated interfaceaddtest to .gitignore

Change-Id: I3f051b334efdd6bb3422f2c87bf1373e43e0ca7e
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/src/test/.gitignore b/src/test/.gitignore
index 91e1c51..8d2eb71 100644
--- a/src/test/.gitignore
+++ b/src/test/.gitignore
@@ -14,4 +14,5 @@
 /conditiongentest.hpp
 /conditiongentest
 /callbacktest
+/interfaceaddtest
 /interfaceaddtest.hpp