am 4367ab00: Set the wifi-only for SIP service as the default config.

Merge commit '4367ab00edb59f95703e4a8a0f9a1a73dbf13551' into gingerbread-plus-aosp

* commit '4367ab00edb59f95703e4a8a0f9a1a73dbf13551':
  Set the wifi-only for SIP service as the default config.