lib/file/abb_io: move block list put into multi-part event loop
lib/file/abb_io: move block list put into multi-part event loop

Instead of exiting the event loop once all block blobs have been
uploaded, issue a block list put request in the completion cb for the
final block blob put request, and only break the event loop once the
block list put response comes in.

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

ddiss/elasto,ddiss/elasto