Expose APIs to configure transports to be restricted by VCN

This commit exposes APIs to allow caller to configure transports that
willl be marked as restricted by VCN.

This API allows carriers to restrict the access to the carrier owned
networks and thus prevent apps from circumventing the VCN.

Bug: 239104955
Test: make update-api
CTS-Coverage-Bug: 262263040
Change-Id: I21aaab57e3d51f4f206c613c94c95ee02150b929