Revert "minijail: When pid-namespacing, init should be session leader"

This reverts commit 552cb1a2c2cc2fca6303fe70eb7cd578b3434d60.

The setsid behavior in the non/-i case causes some signal
behaviors that we don't really want (like being able to
send signals starting at the parent).  Lets revert until
we can sort out the nuances here.

BUG=None
TEST=`./minijail0 -p sleep 600` & hitting CTRL+C kills the whole process tree

Change-Id: I47b36d633608a92d20337ca7791c23b6bade07e0
Reviewed-on: https://chromium-review.googlesource.com/239865
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed