Sync defaults between DISABLE_REASON_INFOS and overlay

Currently, defaults are provided in two places:
WifiConfiguration and overlay XML file. The
overlay XML takes precedence.

In the meantime, keep them in sync to reduce
confusion. But eventually, we should only specify
the default value in one place.

Bug: 180148727
Test: compiles
Change-Id: I737453bb81cc8ce0a6f8df61e87ee840fea5dd28
1 file changed