obo: support for put object with x-amz-meta
obo: support for put object with x-amz-meta

obo put buck/obj --x-amz-meta foo=bar bar=baz

Signed-off-by: Yehuda Sadeh <48638f9c2a62c4fd20be28d0bdad68f5cd041402@redhat.com>

yehudasa/obo,yehudasa/obo