Extend test case timeout value for low-end devices

For MediaTek low-end SoCs, it is not enough to finish all
tests in 5 minutes. Log shows "ERROR Test timed out".
When we increase timeout value, we can finish all tests.

Bug: 123202162
Test: VtsKernelNetTest#testKernelNetworking
Change-Id: Id4f511c1da4e20cfa99872f0c6b770aaf4790de3
1 file changed