chore: adjust pylint params to adhere PEP8

.pylintrc

@@ -271,7 +271,7 @@ generated-members=
 [FORMAT]
 
 # Maximum number of characters on a single line.
-max-line-length=80
+max-line-length=79
 
 # TODO(https://github.com/PyCQA/pylint/issues/3352): Direct pylint to exempt
 # lines made too long by directives to pytype.
@@ -298,7 +298,7 @@ max-module-lines=99999
 # spaces.  Google's externaly-published style guide says 4, consistent with
 # PEP 8.  Here, we use 2 spaces, for conformity with many open-sourced Google
 # projects (like TensorFlow).
-indent-string='  '
+indent-string='    '
 
 # Number of spaces of indent required inside a hanging  or continued line.
 indent-after-paren=4
@@ -444,4 +444,4 @@ valid-metaclass-classmethod-first-arg=mcs
 # "Exception"
 overgeneral-exceptions=StandardError,
                        Exception,
-                       BaseException
+                       BaseException