Replace testr with stestr

os-testr 1.0.0 now uses stestr as underlying test runner,
so we should re-configure our testing setup accordingly.

Change-Id: I0a8f23cf2bd934c288daf1a9fa8b672768641163

.gitignore

@@ -25,6 +25,7 @@ develop-eggs
 
 # Other
 *.DS_Store
+.stestr
 .testrepository
 .tox
 .idea

.stestr.conf

@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=${TESTS_DIR:-./ironicclient/tests/unit}
+top_dir=./

.testr.conf

@@ -1,5 +0,0 @@
-[DEFAULT]
-test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} ${PYTHON:-python} -m subunit.run discover -t ./ ${TESTS_DIR:-./ironicclient/tests/unit}  $LISTOPT $IDOPTION
-
-test_id_option=--load-list $IDFILE
-test_list_option=--list

tox.ini

@@ -7,7 +7,7 @@ skipsdist = True
 setenv = VIRTUAL_ENV={envdir}
          PYTHONDONTWRITEBYTECODE = 1
          LANGUAGE=en_US
-         # .testr.conf uses TESTS_DIR
+         # .stestr.conf uses TESTS_DIR
          TESTS_DIR=./ironicclient/tests/unit
 usedevelop = True
 install_command =
@@ -27,11 +27,14 @@ commands =
     doc8 doc/source CONTRIBUTING.rst README.rst
 
 [testenv:cover]
-setenv = VIRTUAL_ENV={envdir}
-         LANGUAGE=en_US
+setenv = {[testenv]setenv}
+         PYTHON=coverage run --source ironicclient --omit='*tests*' --parallel-mode
 commands =
-    coverage erase
-    python setup.py testr --coverage --testr-args='{posargs}'
+  coverage erase
+  ostestr {posargs}
+  coverage combine
+  coverage report --omit='*tests*'
+  coverage html -d ./cover --omit='*tests*'
 
 [testenv:venv]
 commands = {posargs}