add object_post_as_copy to saio.
add object_post_as_copy to saio.

adding the option to the saio configuration file
to make it easier to test fast post.

Change-Id: I22b0e60c7d73580e3db6fcd48e6dfc79fab6032a
Signed-off-by: Thiago da Silva <f23d94b2a735b6193d3882ae31308d2e41e8282b@redhat.com>

openstack/swift,psachin/swift,hurricanerix/swift,psachin/swift,smerritt/swift,matthewoliver/swift,tipabu/swift,openstack/swift,tipabu/swift,smerritt/swift,matthewoliver/swift,redbo/swift,clayg/swift,hurricanerix/swift,redbo/swift,nadeemsyed/swift,smerritt/swift,tipabu/swift,openstack/swift,smerritt/swift,clayg/swift,swiftstack/swift,hurricanerix/swift,psachin/swift,hurricanerix/swift,tipabu/swift,swiftstack/swift,psachin/swift,nadeemsyed/swift,nadeemsyed/swift,openstack/swift,nadeemsyed/swift,swiftstack/swift,clayg/swift,notmyname/swift,matthewoliver/swift,matthewoliver/swift,notmyname/swift,notmyname/swift,clayg/swift,notmyname/swift