Fix python linting and update yapf line length

Author: kumekay

.flake8

@@ -138,24 +138,4 @@ statistics = True
 
 exclude =
     .git,
-    __pycache__,
-    # submodules
-        components/esptool_py/esptool,
-        components/bootloader/subproject/components/micro-ecc/micro-ecc,
-        components/nghttp/nghttp2,
-        components/libsodium/libsodium,
-        components/json/cJSON,
-        components/mbedtls/mbedtls,
-        components/expat/expat,
-        components/unity/unity,
-        examples/build_system/cmake/import_lib/main/lib/tinyxml2
-    # other third-party libraries
-        tools/kconfig_new/kconfiglib.py,
-    # autogenerated scripts
-        components/protocomm/python/constants_pb2.py,
-        components/protocomm/python/sec0_pb2.py,
-        components/protocomm/python/sec1_pb2.py,
-        components/protocomm/python/session_pb2.py,
-        components/wifi_provisioning/python/wifi_config_pb2.py,
-        components/wifi_provisioning/python/wifi_constants_pb2.py,
-        examples/provisioning/custom_config/components/custom_provisioning/python/custom_config_pb2.py,
+    __pycache__

.style.yapf

@@ -80,7 +80,7 @@ blank_line_before_nested_class_or_def=False
 coalesce_brackets=False
 
 # The column limit.
-column_limit=140
+column_limit=120
 
 # The style for continuation alignment. Possible values are:
 #

ci/copyright_header_checker.py

@@ -5,13 +5,13 @@
 # Project: ESP-IDF VSCode Extension
 # File Created: Tuesday, 4th June 2019 11:00:17 pm
 # Copyright 2019 Espressif Systems (Shanghai) CO LTD
-# 
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
-# 
+#
 #    http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -27,7 +27,7 @@
 DEFAULT_EXTENSIONS = ["js", "ts", "py"]
 
 COPYRIGHT_REGEX = re.compile(r"Copyright [0-9]{4} Espressif Systems \(Shanghai\) CO\.? LTD\.?",
-                             flags=(re.MULTILINE | re.IGNORECASE))
+                             flags=re.MULTILINE | re.IGNORECASE)
 
 
 def contain_copyright_message(file_path):