PYTHON-2838 Skip getlasterror test on >=5.0

(cherry picked from commit c93194a)

Author: ShaneHarvey

test/test_collection.py

@@ -1586,6 +1586,7 @@ def test_acknowledged_delete(self):
         self.assertEqual(2, db.test.delete_many({}).deleted_count)
         self.assertEqual(0, db.test.delete_many({}).deleted_count)
 
+    @client_context.require_version_max(4, 9)
     def test_manual_last_error(self):
         coll = self.db.get_collection("test", write_concern=WriteConcern(w=0))
         coll.insert_one({"x": 1})

test/test_legacy_api.py

@@ -1027,7 +1027,13 @@ def test_group_uuid_representation(self):
                          coll.group([], {"_id": uu},
                                     {"count": 0}, reduce))
 
+    @client_context.require_version_max(5, 0, 99)
     def test_last_status(self):
+        # Skip versions like "v5.0.0-alpha0-1768-gfda1dfa" which equals:
+        # Version(5, 0, 1, -1)
+        if (client_context.version[:2] == (5, 0) and
+                client_context.version[-1] == -1):
+            self.skipTest('getLastError is not supported')
         # Tests many legacy API elements.
         # We must call getlasterror on same socket as the last operation.
         db = rs_or_single_client(maxPoolSize=1).pymongo_test