Add wheezy chroot files to gitignore file

Signed-off-by: Lisa Velden <velden@google.com>
Reviewed-by: Hrvoje Ribicic <riba@google.com>

.gitignore

@@ -42,6 +42,8 @@
 /configure
 /devel/squeeze-amd64.tar.gz
 /devel/squeeze-amd64.conf
+/devel/wheezy-amd64.tar.gz
+/devel/wheezy-amd64.conf
 /epydoc.conf
 /ganeti
 /stamp-srclinks