ImsServiceEntitlement default values missing

ImsServiceEntitlement.* configs and their default values
were added in S at
commit e600a8e4e8615410f2f45a4c35f2250d6b1b32b1.

Somehow the default values are missing now. Add back.

Bug: 210485357
Change-Id: I98d943394ed308956c5271b8efaa5094d15dc8ca
1 file changed