HPCC-9337 --source-process option to specify where roxie to copy data from

Add --source-process cli option to ecl-packagemap-add, ecl-publish,
and ecl-queries-copy to explicitly specify which process cluster
roxie should pull data from when loading a query with
CopyResources=true.

Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>