Use stestr for unit tests

Change-Id: Ifaf3991e1c9400683e9c98185b86cb39ac3d318d

.gitignore

@@ -9,6 +9,7 @@ tags
 heat-test.db
 heat.sqlite
 .venv
+.stestr/*
 AUTHORS
 ChangeLog
 templates/cloudformation-examples

.stestr.conf

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

.testr.conf

@@ -1,8 +0,0 @@
-[DEFAULT]
-test_command=
-    PYTHON=$(echo ${PYTHON:-python} | sed 's/--source heat//g')
-    START_AT=${TESTR_START_DIR:-.}
-    ${PYTHON} -m subunit.run discover -s $START_AT -t . $LISTOPT $IDOPTION
-    if [ "$START_AT" = "." ]; then for plugin in $START_AT/contrib/*; do ${PYTHON} -m subunit.run discover -s $plugin $LISTOPT $IDOPTION; done; fi
-test_id_option=--load-list $IDFILE
-test_list_option=--list

tox.ini

@@ -7,14 +7,14 @@ skipsdist = True
 setenv = VIRTUAL_ENV={envdir}
          PYTHONWARNINGS=default::DeprecationWarning
          OS_TEST_PATH=heat/tests
-         TESTR_START_DIR=heat/tests
 usedevelop = True
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands =
   find {toxinidir} -not -path '{toxinidir}/.tox/*' -name '*.py[c|o]' -delete
-  python setup.py testr --slowest --testr-args='{posargs}'
+  stestr run '{posargs}'
+  stestr slowest
 
 whitelist_externals =
   bash
@@ -24,7 +24,7 @@ passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 [testenv:py27log]
 commands =
   find . -type f -name "*.py[c|o]" -delete
-  ostestr '^(?!heat_integrationtests){posargs}'
+  stestr run '^(?!heat_integrationtests){posargs}'
 
 [testenv:pep8]
 commands =