HPCC-9159 Add missing plugin proxies

Fixes HPCC-9159

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #4250 from GordonSmith/HPCC-9159

HPCC-9159 Add missing plugin proxies

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>