lib/testutil/integration: increase StartRootMT timeout

This may help to address occasional flakiness that I observed when
running these tests locally.

Change-Id: Ibcc4a9dbe7367ebf51981f8fea965b3a9a3658d0
1 file changed
tree: 6a9242d4fbae5ff8111f4ac99333d7a3d20d7cca
  1. lib/
  2. profiles/
  3. runtimes/
  4. security/
  5. services/
  6. tools/