Use common tools to fire up tests

This patch uses os-testr in order to fire up tests
and allow to parametrize them in the way that is
common for the rest of OpenStack projects.

Change-Id: I6ef493f63675c63c8bad409cb15960582344c046
Partial-bug: #1469045

test-requirements.txt

@@ -1,6 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
+os-testr>=0.4.1 # Apache-2.0
 coverage>=3.6 # Apache-2.0
 fixtures>=1.3.1 # Apache-2.0/BSD
 hacking<0.11,>=0.10.2 # Apache-2.0
@@ -8,7 +9,6 @@ mock>=1.2 # BSD
 oslotest>=1.10.0 # Apache-2.0
 requests-mock>=0.7.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
-testtools>=1.4.0 # MIT
 
 # Files beyond this line are not in Global Requirements list
 # and must be added there.

tox.ini

@@ -5,9 +5,7 @@ envlist = py27,pep8,functional,cleanup
 
 [testenv]
 usedevelop = True
-install_command = pip install --allow-external -U {opts} {packages}
 whitelist_externals = bash
-                      oslo_debug_helper
                       python
 setenv = VIRTUAL_ENV={envdir}
          ARTIFACTS={toxinidir}/{env:ARTIFACTS:test_run}
@@ -31,7 +29,7 @@ setenv = VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 
-commands = python setup.py test --slowest --testr-args "{posargs}"
+commands = ostestr --serial {posargs}
 
 [testenv:functional]
 setenv = {[testenv]setenv}
@@ -39,16 +37,7 @@ setenv = {[testenv]setenv}
 commands =
     bash {toxinidir}/tools/cleanup.sh
     bash {toxinidir}/tools/prepare_nailgun.sh
-    python setup.py test --slowest --testr-args "{posargs}"
-
-[testenv:dbgunit]
-commands = oslo_debug_helper -t {toxinidir}/fuelclient/tests/unit {posargs}
-
-[testenv:dbgfunc]
-commands =
-    bash {toxinidir}/tools/cleanup.sh
-    bash {toxinidir}/tools/prepare_nailgun.sh
-    oslo_debug_helper -t {toxinidir}/fuelclient/tests/functional {posargs}
+    ostestr --serial {posargs}
 
 [testenv:cleanup]
 commands =
@@ -56,14 +45,12 @@ commands =
     bash -c "find {toxinidir} -name \"*.pyc\" -delete"
 
 [testenv:pep8]
-deps = hacking==0.10
-usedevelop = False
 commands =
     flake8 {posargs:fuelclient}
 
 [testenv:cover]
 commands =
-    python setup.py testr --coverage --testr-args '{posargs}'
+    python setup.py test --coverage --testr-args '{posargs}'
 
 [testenv:venv]
 commands = {posargs:}