Python tests (py27, py35) fail due to absence of os-testr

[Goutham Pacha Ravi]

Sample failure on https://review.openstack.org/#/c/550143/1
Log: http://logs.openstack.org/43/550143/1/check/openstack-tox-py27/8475f49/job-output.txt.gz (File attached with this bug in case it disappears from the log servers)

The problem seems to be with os-testr python package missing within the environment. The executable (ostestr) is therefore not installed. The resolution needs to be to switch to using stestr instead of os-testr.

See mailing list discussion here: http://lists.openstack.org/pipermail/openstack-dev/2017-September/122135.html
Related cinderclient commit: https://github.com/openstack/python-cinderclient/commit/203251d7

2018-03-06 16:18:08.552614 | Running tox: tox -epy27 -vv
2018-03-06 16:18:08.582949 |
2018-03-06 16:18:08.583178 | TASK [tox : Run tox]
2018-03-06 16:18:09.032929 | ubuntu-xenial | removing /home/zuul/src/git.openstack.org/openstack/python-manilaclient/.tox/log
2018-03-06 16:18:09.037081 | ubuntu-xenial | using tox.ini: /home/zuul/src/git.openstack.org/openstack/python-manilaclient/tox.ini
2018-03-06 16:18:09.037257 | ubuntu-xenial | using tox-2.9.1 from /usr/local/lib/python2.7/dist-packages/tox/__init__.pyc
2018-03-06 16:18:09.037323 | ubuntu-xenial | skipping sdist step
2018-03-06 16:18:09.037513 | ubuntu-xenial | py27 start: getenv /home/zuul/src/git.openstack.org/openstack/python-manilaclient/.tox/py27
2018-03-06 16:18:09.065108 | ubuntu-xenial | py27 reusing: /home/zuul/src/git.openstack.org/openstack/python-manilaclient/.tox/py27
2018-03-06 16:18:09.079805 | ubuntu-xenial | py27 finish: getenv after 0.04 seconds
2018-03-06 16:18:09.079887 | ubuntu-xenial | py27 start: finishvenv
2018-03-06 16:18:09.089626 | ubuntu-xenial | py27 finish: finishvenv after 0.01 seconds
2018-03-06 16:18:09.089710 | ubuntu-xenial | py27 start: envreport
2018-03-06 16:18:09.090612 | ubuntu-xenial | setting PATH=/home/zuul/src/git.openstack.org/openstack/python-manilaclient/.tox/py27/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
2018-03-06 16:18:09.093760 | ubuntu-xenial | /home/zuul/src/git.openstack.org/openstack/python-manilaclient$ /home/zuul/src/git.openstack.org/openstack/python-manilaclient/.tox/py27/bin/pip freeze >/home/zuul/src/git.openstack.org/openstack/python-manilaclient/.tox/py27/log/py27-4.log
2018-03-06 16:18:09.796684 | ubuntu-xenial | py27 installed: alabaster==0.7.10,asn1crypto==0.24.0,Babel==2.5.3,bcrypt==3.1.4,certifi==2018.1.18,cffi==1.11.5,chardet==3.0.4,cliff==2.11.0,cmd2==0.8.0,contextlib2==0.5.5,coverage==4.5.1,cryptography==2.1.4,ddt==1.1.1,debtcollector==1.19.0,docutils==0.14,dulwich==0.18.6,enum34==1.1.6,extras==1.0.0,fasteners==0.14.1,fixtures==3.0.0,flake8==2.5.5,funcsigs==1.0.2,functools32==3.2.3.post2,future==0.16.0,hacking==0.12.0,idna==2.6,imagesize==1.0.0,ipaddress==1.0.19,iso8601==0.1.12,Jinja2==2.10,jsonschema==2.6.0,keystoneauth1==3.4.0,linecache2==1.0.0,MarkupSafe==1.0,mccabe==0.2.1,mock==2.0.0,monotonic==1.4,msgpack==0.5.6,netaddr==0.7.19,netifaces==0.10.6,openstackdocstheme==1.18.1,oslo.concurrency==3.25.0,oslo.config==5.2.0,oslo.context==2.20.0,oslo.i18n==3.19.0,oslo.log==3.36.0,oslo.serialization==2.24.0,oslo.utils==3.35.0,paramiko==2.4.0,pbr==3.1.1,pep8==1.5.7,prettytable==0.7.2,pyasn1==0.4.2,pycparser==2.18,pyflakes==0.8.1,Pygments==2.2.0,pyinotify==0.9.6,PyNaCl==1.2.1,pyparsing==2.2.0,pyperclip==1.6.0,python-dateutil==2.6.1,python-keystoneclient==3.15.0,python-mimeparse==1.6.0,python-subunit==1.2.0,pytz==2018.3,PyYAML==3.12,reno==2.7.0,requests==2.18.4,rfc3986==1.1.0,simplejson==3.13.2,six==1.11.0,snowballstemmer==1.2.1,Sphinx==1.6.5,sphinxcontrib-websupport==1.0.1,stestr==2.0.0,stevedore==1.28.0,subprocess32==3.2.7,tempest==18.0.0,testrepository==0.0.20,testtools==2.3.0,traceback2==1.4.0,typing==3.6.4,unicodecsv==0.14.1,unittest2==1.1.0,urllib3==1.22,voluptuous==0.11.1,wrapt==1.10.11
2018-03-06 16:18:09.796863 | ubuntu-xenial | py27 finish: envreport after 0.70 seconds
2018-03-06 16:18:09.796934 | ubuntu-xenial | py27 start: runtests
2018-03-06 16:18:09.797038 | ubuntu-xenial | py27 runtests: PYTHONHASHSEED='1010373949'
2018-03-06 16:18:09.797183 | ubuntu-xenial | py27 runtests: commands[0] | find . -type f -name *.pyc -delete
2018-03-06 16:18:09.797526 | ubuntu-xenial | setting PATH=/home/zuul/src/git.openstack.org/openstack/python-manilaclient/.tox/py27/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
2018-03-06 16:18:09.798547 | ubuntu-xenial | /home/zuul/src/git.openstack.org/openstack/python-manilaclient$ /usr/bin/find . -type f -name *.pyc -delete
2018-03-06 16:18:09.897919 | ubuntu-xenial | py27 runtests: commands[1] | ostestr
2018-03-06 16:18:09.899039 | ubuntu-xenial | ERROR: InvocationError: could not find executable 'ostestr'
2018-03-06 16:18:09.899147 | ubuntu-xenial | py27 finish: runtests after 0.10 seconds

[Tom Barron (tpb)]

Fixed by commit 73315f2a8997a51b0de635b71edb7d8e6e448673 which changed from use of ostestr to stestr. This commit is included in 1.23.0.