TBR: veyron/services/identity: Remove children method and add glob invoker in place.
TBR: veyron/services/identity: Remove children method and add
glob invoker in place.

Change-Id: Ic1240865cfd4c9243d75b4fd95c28d0954a6c2f2

vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref,vanadium/go.ref