Switch to using stestr

According to Openstack summit session [1] stestr is maintained project
to which all Openstack projects should migrate.

Let's switch it then.

Also adjust requirements to pass the gate.

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

Change-Id: I79b2220c20a04e2e33360bc330b5b4b4124caf71
Signed-off-by: Chuck Short <chucks@redhat.com>

lower-constraints.txt

@@ -116,7 +116,7 @@ sqlalchemy-migrate==0.11.0
 SQLAlchemy==1.0.10
 sqlparse==0.2.4
 statsd==3.2.2
-stestr==2.0.0
+stestr==1.0.0
 stevedore==1.20.0
 Tempita==0.5.2
 testrepository==0.0.20

requirements.txt

@@ -6,7 +6,7 @@ alembic>=0.8.10 # MIT
 Babel!=2.4.0,>=2.3.4 # BSD
 construct<2.9,>=2.8.10 # MIT
 eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
-Flask!=0.11,<1.0,>=0.10 # BSD
+Flask!=0.11,>=0.10 # BSD
 futurist>=1.2.0 # Apache-2.0
 ironic-lib>=2.5.0 # Apache-2.0
 jsonpath-rw<2.0,>=1.2.0 # Apache-2.0

test-requirements.txt

@@ -8,7 +8,7 @@ hacking>=1.0.0,<1.2.0 # Apache-2.0
 mock>=2.0.0 # BSD
 sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 openstackdocstheme>=1.18.1 # Apache-2.0
-os-testr>=1.0.0 # Apache-2.0
+stestr>=1.0.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 testresources>=2.0.0 # Apache-2.0/BSD

tox.ini

@@ -7,7 +7,7 @@ install_command = pip install -U -c{env:UPPER_CONSTRAINTS_FILE:https://git.opens
 deps =
     -r{toxinidir}/test-requirements.txt
 commands =
-    ostestr {posargs}
+    stestr run {posargs}
 setenv =
     VIRTUAL_ENV={envdir}
     PYTHONDONTWRITEBYTECODE=1
@@ -27,7 +27,7 @@ setenv =
     PYTHON=coverage run --branch --omit='*test*' --source ironic_inspector --parallel-mode
 commands =
     coverage erase
-    ostestr {posargs}
+    stestr run {posargs}
     coverage combine
     coverage report -m --omit='*test*' --fail-under 90
     coverage html -d ./cover --omit='*test*'