TBR: devtools: postsubmit test needs to set both JIRI_ROOT and V23_ROOT to fake root.
TBR: devtools: postsubmit test needs to set both JIRI_ROOT and V23_ROOT
to fake root.

Change-Id: I5c6c36e0d6cf3482e6f9c81ef32738a1eccbccd3

vanadium/go.devtools,vanadium/go.devtools,vanadium/go.devtools