unittests: change self.assertEquals to self.assertEqual

The unittest module has deprecated the former name.

BUG=chromium:980619
TEST=`cros lint` is unchanged

Change-Id: I2b93cc6079d1bf49950ec0cdef7a4edcdf5535ed
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/1810597
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/cbuildbot_unittest.py b/scripts/cbuildbot_unittest.py
index 3b67433..fdeb26f 100644
--- a/scripts/cbuildbot_unittest.py
+++ b/scripts/cbuildbot_unittest.py
@@ -31,11 +31,11 @@
     chrome_rev = None
 
     def _TestConfig(expected):
-      self.assertEquals(expected,
-                        cbuildbot._IsDistributedBuilder(
-                            options=options,
-                            chrome_rev=chrome_rev,
-                            build_config=build_config))
+      self.assertEqual(expected,
+                       cbuildbot._IsDistributedBuilder(
+                           options=options,
+                           chrome_rev=chrome_rev,
+                           build_config=build_config))
 
     # Default options.
     _TestConfig(False)
@@ -66,5 +66,5 @@
             '--cbb_build_packages', 'pkgA pkgB', 'caroline-postsubmit']
     options = cbuildbot.ParseCommandLine(parser, argv)
     expected = ['pkgA', 'pkgB']
-    self.assertEquals(expected, options.cbb_build_packages)
-    self.assertEquals('hash1234', options.cbb_snapshot_revision)
+    self.assertEqual(expected, options.cbb_build_packages)
+    self.assertEqual('hash1234', options.cbb_snapshot_revision)