Switch to use stestr for unit tests

The patch:
 * replaces .testr.conf by .stestr.conf
 * removes os-testr requirement
 * adds stestr requirement
 * edits tox.ini file so that only stestr is used
 * removes .testrepository from .gitignore

Change-Id: I14dae1cc58e3b5e2b3157df0803c3a15e9b55102

.gitignore

@@ -27,7 +27,6 @@ cover/
 !.coveragerc
 .tox
 nosetests.xml
-.testrepository
 .venv
 .stestr
 

.stestr.conf

@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=./config_tempest/tests
+top_dir=./

.testr.conf

@@ -1,7 +0,0 @@
-[DEFAULT]
-test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
-             OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
-             OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
-             ${PYTHON:-python} -m subunit.run discover -t ./ . $LISTOPT $IDOPTION
-test_id_option=--load-list $IDFILE
-test_list_option=--list

requirements.txt

@@ -5,6 +5,6 @@
 pbr>=1.8 # Apache-2.0
 tempest>=14.0.0 # Apache-2.0
 requests>=2.10.0,!=2.12.2 # Apache-2.0
-os-testr>=0.8.0 # Apache-2.0
+stestr>=1.1.0 # Apache-2.0
 os-client-config>=1.26.0 # Apache-2.0
 oslo_config>=3.23.0 # Apache-2.0

tox.ini

@@ -7,7 +7,6 @@ skipsdist = True
 usedevelop = True
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 setenv =
-   OS_TEST_PATH=./config_tempest/tests
    VIRTUAL_ENV={envdir}
    PYTHONWARNINGS=default::DeprecationWarning
 whitelist_externals = *
@@ -16,7 +15,7 @@ deps =
     -r{toxinidir}/test-requirements.txt
 commands =
     find . -type f -name "*.pyc" -delete
-    ostestr {posargs}
+    stestr --test-path ./config_tempest/tests run {posargs}
 
 [testenv:pep8]
 commands = flake8 {posargs}
@@ -25,7 +24,10 @@ commands = flake8 {posargs}
 commands = {posargs}
 
 [testenv:cover]
-commands = python setup.py testr --coverage --testr-args='{posargs}'
+commands =
+    coverage erase
+    find . -type f -name "*.pyc" -delete
+    stestr --test-path ./config_tempest/tests run {posargs}
 
 [testenv:docs]
 commands = python setup.py build_sphinx