Add some missing newlines for pep8 style

Author: holdenk

python/pyspark/ml/tests.py

@@ -120,6 +120,7 @@ def __init__(self, seed=None):
         self._setDefault(maxIter=10)
         self._set(seed=seed)
 
+
 class OtherTestParams(HasMaxIter, HasInputCol, HasSeed):
     """
     A subclass of Params mixed with HasMaxIter, HasInputCol and HasSeed.
@@ -188,6 +189,7 @@ def test_hasseed(self):
         # Check that a different class has a different seed
         self.assertNotEqual(other.getSeed(), noSeedSpecd.getSeed())
 
+
 class FeatureTests(PySparkTestCase):
 
     def test_binarizer(self):