"visually indented line with same indent as next logical line" on function def

With 0.29, there is a regression on the way function definition is defined.

For example, Before this was formatted correctly by yapf:
```python
# when using click, long function def can happen

def entrypoint(
ctx,
mode,
config,
# only,
myserver,
projects,
verbose,
validate,
myserver_url,
myserver_token,
report_file,
report_html,
color,
diff,
debug,
config_project_url,
configured_by_mytool_badge_url,
accepted_external_badge_image_urls,
smtp_server,
smtp_port,
watchers,
sentry_dsn,
gelf_host,
gelf_level,
old_configured_by_mytool_badge_urls):
if color == "force":
if color == "force":
ctx.color = True
```

After 0.27:
```python

def entrypoint(
ctx,
mode,
config,
# only,
myserver,
projects,
verbose,
validate,
myserver_url,
myserver_token,
report_file,
report_html,
color,
diff,
debug,
config_project_url,
configured_by_mytool_badge_url,
accepted_external_badge_image_urls,
smtp_server,
smtp_port,
watchers,
sentry_dsn,
gelf_host,
gelf_level,
old_configured_by_mytool_badge_urls):
if color == "force":
...
```

I would like to keep the old behavior, because I find much more maintainable, to be able to distinguish between list of parameter and the indentation of the block.

At least please provide an option/knob, such as "overindent_def", so that user can opt-in if they want.

Today, I have to yapf:disable these block