tox tests with run_tests.sh instead of nosetests

In order to ensure the glance-logcapture plugin is loaded dynamically,
we configure tox to drive tests with the run_tests.sh script intead of
calling nosetests directly.

This is intended as a temporary measure, pending promotion of the
glance-logcapture plugin to openstack-nose.

Change-Id: I556c751f4c2d31c1cbacd42d835ab436fb8f6988

glance/tests/functional/__init__.py

@@ -371,6 +371,7 @@ class FunctionalTest(unittest.TestCase):
 
     inited = False
     disabled = False
+    log_files = []
 
     def setUp(self):
         self.test_id, self.test_dir = test_utils.get_isolated_test_env()

tox.ini

@@ -5,7 +5,7 @@ envlist = py26,py27,pep8
 setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/tools/pip-requires
        -r{toxinidir}/tools/test-requires
-commands = nosetests
+commands = {toxinidir}/run_tests.sh -N
 
 [testenv:pep8]
 deps = pep8