qa: add .teuthology_branch with `master` contents

This is follow up change for:

    teuthology-suite: automate -t argument default value
    https://github.com/ceph/teuthology/pull/1490

Signed-off-by: Kyr Shatskyy <kyrylo.shatskyy@suse.com>

diff --git a/qa/.teuthology_branch b/qa/.teuthology_branch
new file mode 100644 (file)
index 0000000..1f7391f
--- /dev/null
+++ b/qa/.teuthology_branch
@@ -0,0 +1 @@
+master