Add tox targets for coverage testing.

These will require a minimum of 90% coverage to pass.

Also remove unnecessary 'deps = {[testenv]deps}' lines; all [testenv:*]
targets use the values in [testenv] for any missing configuration
options.

Change-Id: Ifa311965c0329ce406cfb9e44660240574dacb4a

test-requirements.txt

@@ -12,3 +12,4 @@ oslosphinx
 
 # For style checking
 hacking<0.11,>=0.10.0
+coverage

tox.ini

@@ -1,7 +1,7 @@
 [tox]
-minversion = 1.6
+minversion = 2.0
 skipsdist = True
-envlist = py27, py34, docs, pep8
+envlist = py27, py34, docs, pep8, {py27,py34}-coverage
 
 [tox:jenkins]
 downloadcache = ~/cache/pip
@@ -15,16 +15,19 @@ deps = -r{toxinidir}/test-requirements.txt
     -r{toxinidir}/requirements.txt
 commands = nosetests {posargs}
 
+[testenv:py27-coverage]
+commands = nosetests --with-coverage --cover-erase --cover-package=cloudinit --cover-min-percentage=90 --cover-inclusive --cover-html {posargs}
+
+[testenv:py34-coverage]
+commands = nosetests --with-coverage --cover-erase --cover-package=cloudinit --cover-min-percentage=90 --cover-inclusive --cover-html {posargs}
+
 [testenv:pep8]
-deps = {[testenv]deps}
 commands = flake8 {posargs}
 
 [testenv:docs]
-deps = {[testenv]deps}
 commands = python setup.py build_sphinx
 
 [testenv:venv]
-deps = {[testenv]deps}
 commands = {posargs}
 
 [flake8]