summary: fix odd code for allowing URI clone template to either be specified with {repo} or _{repoid} (Issue #336) Clarify that if the configured URI uses {repo}, then clone_uri_by_id must replace that with _{repoid}. Also, if the URI uses _{repoid}, it is _def_clone_uri that must be computed by replacing it with {node}.

[tox]
minversion = 1.8
envlist = py{26,27}-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    -r{toxinidir}/dev_requirements.txt
    py26-pytest: unittest2
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}