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.

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

Change-Id: I36b48654747209470ac3ed2fcbc9e34e277a0445
Signed-off-by: Charles Short <zulcss@gmail.com>

.gitignore

@@ -5,3 +5,4 @@ tools/lintstack.head.py
 *.egg-info/
 .tox
 .testrepository
+.stestr

.stestr.conf

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

test-requirements.txt

@@ -14,7 +14,7 @@ testtools>=2.2.0 # MIT
 testrepository>=0.0.18 # Apache-2.0/BSD
 testresources>=2.0.0 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
-os-testr>=1.0.0 # Apache-2.0
+stestr>=1.0.0 # Apache-2.0
 tempest>=17.1.0 # Apache-2.0
 bandit>=1.0.1 # Apache-2.0
 sphinx!=1.6.6,>=1.6.2 # BSD

tox.ini

@@ -21,7 +21,7 @@ deps = -r{toxinidir}/test-requirements.txt
 commands =
   find . -type f -name "*.pyc" -delete
   rm -rf .testrepository/times.dbm
-  ostestr {posargs}
+  stestr run {posargs}
 
 whitelist_externals =
   bash