Switch to stestr

According to Openstack summit session [1],
stestr is maintained project to which all Openstack projects should migrate.
Let's switch to stestr as other projects have already moved to it.

[1] https://etherpad.openstack.org/p/YVR-python-pti

Change-Id: I11f742b525d8d7328a9d46f0bd46da112e27ad82

.gitignore

@@ -40,6 +40,7 @@ install-undercloud.log
 .tox
 nosetests.xml
 .testrepository
+.stestr/*
 
 # Translations
 *.mo

.stestr.conf

@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=${TEST_PATH:-./tripleoclient/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

lower-constraints.txt

@@ -138,10 +138,10 @@ sqlalchemy-migrate==0.11.0
 SQLAlchemy==1.0.10
 sqlparse==0.2.2
 statsd==3.2.1
+stestr==2.0.0
 stevedore==1.20.0
 Tempita==0.5.2
 tenacity==4.9.0
-testrepository==0.0.18
 testscenarios===0.4
 testtools==2.2.0
 tooz==1.58.0

test-requirements.txt

@@ -7,7 +7,7 @@ coverage!=4.4,>=4.0 # Apache-2.0
 docutils>=0.11 # OSI-Approved Open Source, Public Domain
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0.0 # BSD
-testrepository>=0.0.18 # Apache-2.0/BSD
+stestr>=2.0.0 # Apache-2.0
 testtools>=2.2.0 # MIT
 requests-mock>=1.2.0 # Apache-2.0
 testscenarios>=0.4  # Apache-2.0/BSD

tox.ini

@@ -6,16 +6,19 @@ skipsdist = True
 [testenv]
 usedevelop = True
 install_command = pip install {opts} {packages}
+passenv =
+  TERM
 setenv =
    VIRTUAL_ENV={envdir}
    LANG=en_US.UTF-8
    LANGUAGE=en_US:en
    LC_ALL=C
+   HOME={envdir}
 deps =
        -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
        -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+commands = stestr run {posargs}
 
 [testenv:bindep]
 basepython = python3
@@ -37,10 +40,16 @@ passenv = *
 
 [testenv:cover]
 basepython = python3
+setenv =
+  PYTHON=coverage run --source tripleoclient --parallel-mode
+  HOME={envdir}
 commands =
-    python setup.py testr --coverage --testr-args='{posargs}'
-    coverage combine
-    coverage report -m
+  coverage erase
+  stestr run --color {posargs}
+  coverage combine
+  coverage html -d cover
+  coverage xml -o cover/coverage.xml
+  coverage report
 
 [testenv:debug]
 basepython = python3