HPCC-9387 Add legacy import support to ecl publish, deploy, and run

Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>
Merge pull request #4852 from afishbeck/eclcmd-legacy

HPCC-9387 Add legacy import support to ecl publish, deploy, and run

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>