Add service-connectivity-pre-jarjar to legacy core platform list

This is a library pre jarjar version which still has dependencies
on legacy core platform APIs and this library will be inculded in
service-connectivity. Thus, this change replaces service-connectivity
with service-connectivity-pre-jarjar.

Bug: 177046265
Test: build pass
Change-Id: I1a84ff07318da03f368cbccb25b6cabebb2de403
Merged-In: I1a84ff07318da03f368cbccb25b6cabebb2de403