createMETSRights: namespace PREMIS elements

Fixes #7210.
createMETSDspace: fix mdRef prefix

Fixes #7212.
createMETSTrim: namespace elements
FPR: add new validation tool/command/rules

refs #7216
Validation: Add client script

refs #7216

Add validate file client script to run validation FPRules and generate
Events from the output.  Update fpradmin commit to include validation
purpose.