Fix CTS ddmlib Timeout Issues

http://b/3048776

ddmlib throws ShellUnresponsiveException now if there is no activity.
Set the timeout to 0 in CTS to never timeout. This matches the prior
behavior, because the test timeouts appear to be controlled through
other timers with timeouts set by constants in HostConfig.Ints.

Change-Id: I800b2477d115d1edc358a601462db97fa0698e2c
1 file changed