Fix coverage reporting for stx-distcloud

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

Currently coverage is 28% based on py27 unit tests

Story: 2003862
Task: 27992
Change-Id: I1a2c3371dfb02d95181306d15012f5c752f91513
Signed-off-by: Al Bailey <Al.Bailey@windriver.com>

.coveragerc

@@ -4,9 +4,9 @@ parallel = True
 source =
     dcmanager
     dcorch
-
-[report]
-ignore_errors = True
 omit = 
     */tests/*
 
+[report]
+ignore_errors = True
+

tox.ini

@@ -92,13 +92,28 @@ commands = {posargs}
 [testenv:cover]
 basepython = python2.7
 usedevelop = True
+deps = -r{toxinidir}/test-requirements.txt
+       -r{toxinidir}/requirements.txt
+       keyring
+       -e../{[dc]nfv_client_src_dir}
+       -e../{[dc]sysinv_src_dir}
+       -e../{[dc]tsconfig_src_dir}
+       -e../{[dc]fmclient_src_dir}
+       -e../{[dc]fm_api_src_dir}
+       -e../{[dc]configutilities_src_dir}
+       -e../{[dc]cgtsclient_src_dir}
+setenv =
+    CURRENT_CFG_FILE={toxinidir}/.current.cfg
+    DATA_DIRECTORY={toxinidir}/dcmanager/tests/data
+    SINGLE_REPO=True
 commands =
     coverage erase
     rm -Rf cover
     rm -f coverage.xml
     find {toxinidir} -not -path '{toxinidir}/.tox/*' -name '*.py[c|o]' -delete
-    python setup.py testr --coverage --testr-args='{posargs}'
+    python setup_ddt_tests.py testr --coverage --testr-args='{posargs}'
     coverage xml --rcfile=.coveragerc_xml
+    coverage report
 
 [testenv:docs] 
 basepython = python3