Set function pointer for SCS peer lookup and rule handler. Add a new module id for SCS. SCS database maintained in dp_peer structure is redundant as same info is maintained in control peer. Therefore remove SCS database from dp_peer structure and also remove APIs which access/update this database. Change-Id: I951f12de487a4be3ae169d1e309352e4e5031fc9 CRs-Fixed: 3226693