mounttabled: exit non-zero on error.
mounttabled: exit non-zero on error.

Allows the mounttabled to be scripted for error cases.

Change-Id: I1d1cdca9986d4c402468ea08dae4b85d00fb1e0a

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