Clarify that rsync_io_timeout is also used for contimeout
Clarify that rsync_io_timeout is also used for contimeout

Change-Id: I5e4a270add2a625e6d5cb0ae9468313ddc88a81b

openstack/swift,openstack/swift,tipabu/swift,tipabu/swift,openstack/swift,tipabu/swift,tipabu/swift,openstack/swift