[STORM-3942] mvn package in storm-dist relies on files being available in sibling directories #7724

running "mvn package" command storm-dist/binary and storm-dist/source directories uses files in sibling directories that may not have been created. This applies to storm-webapp files and possibly others. Change pom.xml files to fail and report the missing file(s) and/or directories. The specification of file source and targets may are if an xml "descriptor" file.

Possibly use maven-enforcer-plugin