vfs_shadow_copy2: add a blackbox test suite
Add a blackbox test suite for vfs_shadow_copy2, testing
parameters mountpoint, basedir, snapdir, snapdirseverywhere,
and testing correct wide-link processing.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11580
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Wed Jan 13 17:11:38 CET 2016 on sn-devel-144
(cherry picked from commit
7362c27a62e3802fc8df975ce50115b683811f4a)