EX-5000 lipe: lamigo ssh_channel_read on CentOS 8

EX-5000 lipe: lamigo ssh_channel_read on CentOS 8

Restart ssh_channel_read() after timeout (return 0).

Test-Parameters: env=ONLY=72 trivial testlist=hot-pools
Signed-off-by: Alexandre Ioffe <aioffe@ddn.com>
Change-Id: I6ce5b6e941e432831452a31f8ea840abd4940821
Reviewed-on: https://review.whamcloud.com/46861
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: John L. Hammond <jhammond@whamcloud.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>