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/upload_symbols_unittest.py b/scripts/upload_symbols_unittest.py
index 876c87a..e87d934 100644
--- a/scripts/upload_symbols_unittest.py
+++ b/scripts/upload_symbols_unittest.py
@@ -569,7 +569,7 @@
     """Upload dir is empty."""
     result = upload_symbols.UploadSymbols([self.data], 'fake_url')
 
-    self.assertEquals(result, 0)
+    self.assertEqual(result, 0)
     self.assertEqual(self.urlopen_mock.call_count, 0)
 
   def testUploadSymbols(self):
@@ -583,9 +583,9 @@
         failed_list=self.failure_file, strip_cfi=len(self.SLIM_CONTENT)+1,
         api_key='testkey')
 
-    self.assertEquals(result, 0)
+    self.assertEqual(result, 0)
     self.assertEqual(self.request_mock.call_count, 10)
-    self.assertEquals(osutils.ReadFile(self.failure_file), '')
+    self.assertEqual(osutils.ReadFile(self.failure_file), '')
 
   def testUploadSymbolsLimited(self):
     """Upload a few files."""
@@ -597,7 +597,7 @@
         [self.data], 'fake_url', upload_limit=2,
         api_key='testkey')
 
-    self.assertEquals(result, 0)
+    self.assertEqual(result, 0)
     self.assertEqual(self.request_mock.call_count, 7)
     self.assertNotExists(self.failure_file)
 
@@ -620,9 +620,9 @@
         [self.data], 'fake_url',
         failed_list=self.failure_file, api_key='testkey')
 
-    self.assertEquals(result, 1)
+    self.assertEqual(result, 1)
     self.assertEqual(upload_mock.call_count, 8)
-    self.assertEquals(osutils.ReadFile(self.failure_file), 'fail.sym\n')
+    self.assertEqual(osutils.ReadFile(self.failure_file), 'fail.sym\n')
 
 # TODO: We removed --network integration tests.