osd/ReplicatedPG: include omap header in copy-get

Missed this the first time around.  Thank you, ceph_test_rados!

Fixes: #7056
Signed-off-by: Sage Weil <sage@inktank.com>
ceph_test_rados: s/tmap/omap/

Signed-off-by: Sage Weil <sage@inktank.com>
osd/ReplicatedPG: fix copy-get iteration of omap keys

We need to call upper_bound() before checking if the iterator is valid!

Signed-off-by: Sage Weil <sage@inktank.com>
Merge pull request #989 from ceph/wip-7056

osd/ReplicatedPG: include omap header in copy-get

This now passes rados/thrash tests without failures.