Add support for running unit tests with nose

Make the 'python setup.py test' able to run unit tests
found under tests/ through the 'nosetests' command

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

tests/test_conn.py

@@ -0,0 +1,16 @@
+
+import unittest
+import libvirt
+
+class TestLibvirtConn(unittest.TestCase):
+    def setUp(self):
+        self.conn = libvirt.open("test:///default")
+
+    def tearDown(self):
+        self.conn = None
+
+    def testConnDomainList(self):
+        doms = self.conn.listAllDomains()
+        self.assertEquals(len(doms), 1)
+        self.assertEquals(type(doms[0]), libvirt.virDomain)
+        self.assertEquals(doms[0].name(), "test")