Fix audio_e2e_test command line arguments
Fix audio_e2e_test command line arguments

The changes in r1068 that moved over to the webrtc/test/buildbot_tests.py launch script was not properly tested on the real machine for the audio_e2e_test. Due to that it contained a few syntax errors and paths that were not resolved as expected. This CL fixes this and has been tested more thorougly.

BUG=none
TEST=Ran, standing in the checkout dir:
out/Release/buildbot_tests.py -t audio_e2e_test
with successful result.

Review URL: https://webrtc-codereview.appspot.com/1070012

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 3d13d9f0a07f8d7e01679490b89fd3b93a96dd0c

sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc