HPCC-10520 Cannot install a bundle without specifiying a directory

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #5541 from richardkchapman/ecl-bundle-dir2

HPCC-10520 Cannot install a bundle without specifiying a directory

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>