change assert(Not)Equals to assert(Not)Equal

According to http://docs.python.org/2/library/unittest.html
assert(Not)Equals is a deprecated alias of assert(Not)Equal.

Change-Id: I2e518d3a92e11e06bacaa67076c0d60ee82ab4a9
Co-Authored-By: Jesse Keating <omgjlk@us.ibm.com>
diff --git a/tests/unit/test_configloader.py b/tests/unit/test_configloader.py
index 3b5c206..f7d580c 100644
--- a/tests/unit/test_configloader.py
+++ b/tests/unit/test_configloader.py
@@ -304,7 +304,7 @@
     def test_conflict_config(self):
         tenant = self.sched.abide.tenants.get('tenant-one')
         jobs = sorted(tenant.layout.jobs.keys())
-        self.assertEquals(
+        self.assertEqual(
             ['base', 'noop', 'trusted-zuul.yaml-job',
              'untrusted-zuul.yaml-job'],
             jobs)