test/cm_file: call elasto_subsystem_init()
test/cm_file: call elasto_subsystem_init()

With 4c442bbbfb94cdfc1d51cb7171dd1e541580478b, elasto_subsystem_init()
was split out from elasto_fopen(). It now needs to be called before any
opens / mkdirs etc. take place.

Signed-off-by: David Disseldorp <589a549dc9f982d9f46aeeb82a09ab6d87ccf1d8@suse.de>

ddiss/elasto,ddiss/elasto