onclite: overlay: Add ImsService package name

Specify ImsService package name with <config_ims_mmtel_package>
and <config_ims_rcs_package>

Remove old Ims Config flag <config_ims_package>
and <config_dynamic_bind_ims> that are no more
used

CRs-Fixed: 2610689
Change-Id: I5dbff41c6b219a1ff3ced9f7aa7db9a3ebc7f39f