Disable test_when_piped_input_then_no_broken_pipe by default

[sylvestre]

It is blocking the executions of the tests and I suspect it is breaking android

[sylvestre]

Android is green again \o/

[Joining7943]

Sorry. Yes, this test is pretty expensive and brute force. Perhaps, there is a more specific problem behind the randomness of the failures?

[sylvestre]

dunno but I haven't seen it failed for a while :)

[Joining7943]

However, nice :)

Maybe it helps. At the time of writing the test in #3910, I haven't figured out why it actually failed. The fix attached to the test just stopped it failing with tail but also with head when both tools were expected to produce no output with options like -c -0.