Updates for stestr

Change-Id: I860981f06e31abda3141a0cb4fd13a0d49080b50

.gitignore

@@ -8,6 +8,7 @@
 *~
 .coverage
 .idea
+.stestr/
 .testrepository
 .tox
 AUTHORS

.stestr.conf

@@ -0,0 +1,4 @@
+[DEFAULT]
+test_path=${OS_TEST_PATH:-./openstackclient/tests/unit}
+top_dir=./
+group_regex=([^\.]+\.)+

tox.ini

@@ -8,6 +8,9 @@ usedevelop = True
 install_command =
     {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
+         OS_STDOUT_CAPTURE=1
+         OS_STDERR_CAPTURE=1
+         OS_TEST_TIMEOUT=60
 deps = -r{toxinidir}/test-requirements.txt
 commands = ostestr {posargs}
 whitelist_externals = ostestr