Add support for copy/add with multiple src files
Add support for copy/add with multiple src files

Part one of solution for issue #6820

Signed-off-by: Doug Davis <ff3bde741799c0eff815b83a54eda3fc494df54f@us.ibm.com>

dnephin/cli,dnephin/cli,ashfall/cli,docker/cli,redpanda/cli,Zebrilee/cli,allencloud/cli,cpuguy83/cli,cpuguy83/cli,riyazdf/cli,docker/cli,e11137/cli,thaJeztah/cli,riyazdf/cli,ashfall/cli,allencloud/cli,e11137/cli,Zebrilee/cli,redpanda/cli,thaJeztah/cli