lib/testutil/integration: use /dev/tty as DebugShell stdout

Previously, if the user did not specify "-v" in "v23 go test", tests
using DebugShell would appear to hang. In fact, the debug shell was
waiting for input from stdin, but the user would never know this because
stdout was redirected to /dev/null.

Change-Id: I17a6fcdf7e797fe1ad9e376adcfa9665c853cd11
1 file changed
tree: b7dc12f50a6f35f25be2c7df1dd342946f393d96
  1. lib/
  2. profiles/
  3. runtimes/
  4. security/
  5. services/
  6. tools/