Move ReplicationPushFilter DynamicItem to ApiModule

Bind DynamicItem of ReplicationPushFilter in the ApiModule which
effectively make it part of Cross-Plugin Communication API.

This change is backward compatible as that extension point can used in
both modes, when replication plugin is an libModule or the Cross-Plugin
Communication is used.

Change-Id: Id0ec1c6a57758b7d35e3451f647d776e3f687aa8