tree 8acd2c0547f95c249e12488a6e91f06a797ea786
parent ed5b471d2e740426a0676d0e534c57443585ccc2
author Betty Zhou <bettyzhou@google.com> 1489773357 -0700
committer Betty Zhou <bettyzhou@google.com> 1489789490 -0700

Add iperf util and update call in active data session tests.

- Add iperf util in tel_test_util.
- Update call in active data session test to use iperf if curl
  is not supported
- Insert wait time before call attempt to ensure data session
  is active
- Fix the typo in TelLivePostflightTest

Test: run test in the lab
Bug: 36187843
Change-Id: Ie9c12a49ce3b6bb482f995a0cbe24e79d724f8a6