Increase CtsNetTestCases shell timeout to 25 minutes

Increased the shell timeout value for CtsNetTestCases from the default
10 minutes to 25 minutes. This change accommodates tests like
android.net.cts.ApfIntegrationTest#testReadWriteProgram, which can take
up to 15 minutes to complete, preventing
ShellCommandUnresponsiveException errors.

Bug: 383940149
Test: TH
Change-Id: I90b5465a85a85a58b7cb12931a52452fe961db8c
1 file changed