Address errors, improvements, formatting

- Removed unused code not portable due to buffer() use
- raw_input() does not exist in Python 3
- Fixed octal constant syntax for Python 3
- Fixed TypeError
- Replace if not exists: makedirs(path) with single call: using makedirs(path, exist_ok=True)
- Class inherits from object, can be safely removed from bases in python3: pylint's useless-object-inheritance (W0235) check

Signed-off-by: JoeLametta <JoeLametta@users.noreply.github.com>

whipper/test/test_result_logger.py

@@ -163,7 +163,8 @@ class LoggerTestCase(unittest.TestCase):
                 Dumper=ruamel.yaml.RoundTripDumper
             )
         )
+        log_body = "\n".join(actualLines[:-1]).encode()
         self.assertEqual(
             parsedLog['SHA-256 hash'],
-            hashlib.sha256("\n".join(actualLines[:-1])).hexdigest().upper()
+            hashlib.sha256(log_body).hexdigest().upper()
         )