Convert type check targets in folly to use configuration

Summary:
Migrating buck integration to use configurations, which is more performant and is the primary supported way to run Pyre.
Mypy is no longer supported at Facebook, so mypy buck integration is covered in this migration as well.

Reviewed By: grievejia

Differential Revision: D21398810

fbshipit-source-id: 12c0cd395e243703f4380b31527d0c202d58cec2

folly/python/test/iobuf.py

@@ -42,7 +42,9 @@ class IOBufTests(unittest.TestCase):
         self.assertEqual(len(chain), len(control[0]))
         self.assertEqual(chain.chain_size(), sum(len(x) for x in control))
         self.assertEqual(chain.chain_count(), len(control))
-        self.assertEqual(memoryview(chain.next), control[1])  # type: ignore
+        # pyre-fixme[6]: Expected `Union[bytearray, bytes, memoryview]` for 1st
+        #  param but got `Optional[IOBuf]`.
+        self.assertEqual(memoryview(chain.next), control[1])
         self.assertEqual(b"".join(chain), b"".join(control))
 
     def test_cyclic_chain(self) -> None:
@@ -54,7 +56,9 @@ class IOBufTests(unittest.TestCase):
         self.assertEqual(len(chain), len(control[0]))
         self.assertEqual(chain.chain_size(), sum(len(x) for x in control))
         self.assertEqual(chain.chain_count(), len(control))
-        self.assertEqual(memoryview(chain.next), control[1])  # type: ignore
+        # pyre-fixme[6]: Expected `Union[bytearray, bytes, memoryview]` for 1st
+        #  param but got `Optional[IOBuf]`.
+        self.assertEqual(memoryview(chain.next), control[1])
         self.assertEqual(b"".join(chain), b"".join(control))
 
     def test_hash(self) -> None:
@@ -69,7 +73,9 @@ class IOBufTests(unittest.TestCase):
     def test_empty(self) -> None:
         x = b""
         xb = IOBuf(x)
-        self.assertEqual(memoryview(xb), x)  # type: ignore
+        # pyre-fixme[6]: Expected `Union[bytearray, bytes, memoryview]` for 1st
+        #  param but got `IOBuf`.
+        self.assertEqual(memoryview(xb), x)
         self.assertEqual(bytes(xb), x)
         self.assertFalse(xb)
         self.assertEqual(len(xb), len(x))
@@ -97,13 +103,15 @@ class IOBufTests(unittest.TestCase):
         self.assertGreaterEqual(y, x)
 
     def test_typed(self) -> None:
-        x = IOBuf(array.array("l", [1, 2, 3, 4, 5]))  # type: ignore
+        # pyre-fixme[6]: Expected `Union[IOBuf, bytearray, bytes, memoryview]` for
+        #  1st param but got `array[int]`.
+        x = IOBuf(array.array("l", [1, 2, 3, 4, 5]))
         self.assertEqual(x.chain_size(), 5 * struct.calcsize("l"))
 
     def test_unshaped(self) -> None:
-        x = IOBuf(memoryview(b"a").cast("B", shape=[]))  # type: ignore
+        x = IOBuf(memoryview(b"a").cast("B", shape=[]))
         self.assertEqual(x.chain_size(), 1)
 
     def test_multidimensional(self) -> None:
-        x = IOBuf(memoryview(b"abcdef").cast("B", shape=[3, 2]))  # type: ignore
+        x = IOBuf(memoryview(b"abcdef").cast("B", shape=[3, 2]))
         self.assertEqual(x.chain_size(), 6)