Add iotest for sdevent io wrapper

Change-Id: I5f3054720e9c48248351c398b58f98f499799a0a
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/sdevent/test/.gitignore b/sdevent/test/.gitignore
index e69de29..014ec3f 100644
--- a/sdevent/test/.gitignore
+++ b/sdevent/test/.gitignore
@@ -0,0 +1 @@
+iotest