ceph/teuthology — pull request #254 by wusui (2014-05-09 02:23:54+00:00)
Title: Use master as default for debian upgrade.

Make sure that uri is defined for debian upgrades.
Use master as default.

Added _get_uri_() which consolidates checking and assignment of
sha1, tags, and branch values.

Fixes: 7707
Signed-off-by: Warren Usui