[ostree] Update .gitignore

[Colin Walters <walters src gnome org>]

commit 8034a3842b231ab234b4c5ceadc6dc72e112d8c1
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Fri May 1 14:53:42 2015 -0700

    Update .gitignore
    
    https://bugzilla.gnome.org/show_bug.cgi?id=752950

 .gitignore       |    2 ++
 tests/.gitignore |    1 +
 2 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 00f5cfc..03baf47 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,6 +37,8 @@ po
 ABOUT-NLS
 _build
 
+/build-aux/test-driver
+
 /doc/ostree-decl.txt
 /doc/ostree-overrides.txt
 /doc/ostree-undeclared.txt
diff --git a/tests/.gitignore b/tests/.gitignore
index 8a94c78..0b6ff9d 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -2,3 +2,4 @@
 ostree-http-server
 run-apache
 tmpdir-lifecycle
+test-rollsum