Start SIP Service after user unlock on FBE devices

Telephony stores the SIP profiles in CE storage, which is not available
until the user unlocks the device. This change makes it so Telephony
does not start the SIP service until after the user unencrypts the device.

The SIP database is also migrated over from DE->CE storage upon
BOOT_COMPLETE if it sees that a DB currently exists in DE storage. This
will be the case when a device upgrades from M->N.

BUG: 26777818
Change-Id: I735868132c6ace52acb1e98141d22d61a9073bb6
11 files changed