Remove testrepository and .testr.conf

This commit is a follow-up of "switch to using stestr"
which was merged already [1].
After switch to using stestr, testrepository and .testr.conf
are unnecessary and should be removed.

This patch also switch coverage jobs to "stestr".

[1] https://review.openstack.org/574723

Change-Id: Ie28a8769d38c7f4400e5defc4ecc08865dc1825f

.gitignore

@@ -28,7 +28,6 @@ develop-eggs
 # Other
 *.DS_Store
 .idea
-.testrepository
 .tox
 .venv
 .*.swp

.testr.conf

@@ -1,10 +0,0 @@
-[DEFAULT]
-test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
-             OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
-             OS_LOG_CAPTURE=${OS_LOG_CAPTURE:-1} \
-             OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
-             OS_DEBUG=${OS_DEBUG:-0} \
-             ${PYTHON:-python} -m subunit.run discover -t ./ $LISTOPT $IDOPTION
-
-test_id_option=--load-list $IDFILE
-test_list_option=--list

lower-constraints.txt

@@ -133,7 +133,6 @@ stestr==1.0.0
 stevedore==1.28.0
 Tempita==0.5.2
 tenacity==4.9.0
-testrepository==0.0.20
 testresources==2.0.1
 testscenarios==0.4
 testtools==2.2.0

tox.ini

@@ -31,10 +31,14 @@ commands = {posargs}
 basepython = python3
 setenv = VIRTUAL_ENV={envdir}
          LANGUAGE=en_US
+         PYTHON=coverage run --source networking_baremetal --parallel-mode
 commands =
-  coverage erase
-  python setup.py testr --coverage --omit='*test*' --testr-args='{posargs}'
-  coverage report --omit='*test*'
+    coverage erase
+    stestr run '{posargs}'
+    coverage combine
+    coverage html -d cover
+    coverage xml -o cover/coverage.xml
+    coverage report --omit='*test*'
 
 [testenv:docs]
 basepython = python3