veyron/tools/mgmt: Extend test.sh to support suid testing
veyron/tools/mgmt: Extend test.sh to support suid testing

This CL extends the test.sh script for the device manager to support running the
the tests with suidhelper.

Change-Id: I024739956fd5ec73aab9da9fc2c688fac5d4caaf

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