JCRVLT-27 "vlt rcp" requires credentials as URL parameters

- use credentials store also for 'rcp' URIs. this will automatically prompt for passwords in the CLI use case

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/commons/filevault/trunk@1560849 13f79535-47bb-0310-9956-ffa450edef68