Fix coverage reporting for stx-distcloud-client

tox -e cover  was not working, and now it is

Coverage runs successfully in python3.
Current coverage is 64%

Story: 2003862
Task: 28017
Change-Id: Iedd821d889550f63014187c7d6ec51580533a2e2
Signed-off-by: Al Bailey <Al.Bailey@windriver.com>

.gitignore

@@ -27,6 +27,7 @@ cover/
 !.coveragerc
 .tox
 nosetests.xml
+.stestr
 .testrepository
 .venv
 
@@ -55,4 +56,4 @@ ChangeLog
 .*sw?
 
 # Files created by releasenotes build
-releasenotes/build
+releasenotes/build

tox.ini

@@ -38,7 +38,19 @@ commands = {posargs}
 
 [testenv:cover]
 basepython = python3
-commands = python setup.py test --coverage --testr-args='{posargs}'
+setenv =
+    PYTHON=coverage run --parallel-mode
+    PYTHONDONTWRITEBYTECODE=True
+
+deps = {[testenv]deps}
+       coverage
+
+commands =
+    find {toxinidir} -not -path '{toxinidir}/.tox/*' -name '*.py[c|o]' -delete
+    coverage erase
+    stestr --test-path={[dcclient]client_base_dir}/dcmanagerclient/tests run '{posargs}'
+    coverage combine
+    coverage report
 
 [testenv:debug]
 basepython = python3