ceph_objectstore_tool: Add feature called set-allow-sharded-objects

ceph_objectstore_tool: Add feature called set-allow-sharded-objects

Uses --op set-allow-sharded-objects option
This operation will be rejected if on the target OSD's osdmap there is
    at least one OSD which does not support ERASURE CODES.
Prompt the user that they could import if sharded state allowed
Prompt the user to use new feature if sharded state found inconsistent

Fixes: #10077
Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit f3dab446fc8e58b3b3d9334b8c38722e73881b9e)

Conflicts:
	src/tools/ceph_objectstore_tool.cc