The new test scripts (test_v2.sh and friends) was developed on/for Goobuntu and CrOS SDK running bash and some POSIX-compliance details were overlooked. Now that the script has taken shape we can/should make some effort to improve this so the script is more universally useful, particularly for external developers.

For example, in CL:422945 Martin noted that 'local' is not specified by POSIX, but the scripts use 'local' for scoping variables. We could force bash to be used (#!/usr/bin/env bash), but bash itself has many dependencies that users might not want to pull in. Other ideas include converting the existing functions to use subshells, or just relying on naming convention to specify intent of variables (uppercase for global variable which is probably assigned once such as command-line switches, lowercase for local variables which should be initialized at the start of a function using it).