Add test.out to .gitignore and limit toplevel matches

The "keyctl" pattern was causing the tests/keyctl directory to be
ignored. Adding a leading "/" to names expected to be in the toplevel
directory ensures that they don't match names in subdirectories.

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>

.gitignore

diff --git a/.gitignore b/.gitignore
index 1caa791..0ac39ed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,8 @@
 *.so
 *.a
 *.so.*
-keyctl
-request-key
-key.dns_resolver
-rpmbuild
+/keyctl
+/request-key
+/key.dns_resolver
+/rpmbuild
+test.out