setup: use py.test for 'python setup.py test'

pytest.ini

@@ -0,0 +1,2 @@
+[pytest]
+addopts = starcluster

setup.py

@@ -26,9 +26,24 @@
 
 try:
     from setuptools import setup, find_packages
+    from setuptools.command.test import test as TestCommand
+
+    class PyTest(TestCommand):
+        def finalize_options(self):
+            TestCommand.finalize_options(self)
+            self.test_args = []
+            self.test_suite = True
+
+        def run_tests(self):
+            #import here, cause outside the eggs aren't loaded
+            import pytest
+            errno = pytest.main(self.test_args)
+            sys.exit(errno)
+
     console_scripts = ['starcluster = starcluster.cli:main']
     extra = dict(test_suite="starcluster.tests",
                  tests_require="pytest",
+                 cmdclass={"test": PyTest},
                  install_requires=["paramiko>=1.12.1", "boto>=2.23.0",
                                    "workerpool>=0.9.2", "Jinja2>=2.7",
                                    "decorator>=3.4.0", "iptools>=0.6.1",