Support for tar features such as filtering and removing leading directories

[kimptoc]

Some of the tgz files we get from the vendor are not in a directory structure that is immediately useful. So we use some tar options to massage it into a useful form.

Would be handy to do this directly in an XL deployable.

For example, this command

$ tar zxvf {{staging_dir}}/somethingtar.gz --strip-components=3 --directory somedir repository/bin/JAVA/

• the end text filters only files with name matching "repository/bin/JAVA/"
• "--strip-components=3" this removes the first 3 levels of directory hierarchy
• "--directory somedir" this places the result into the given directory - probably covered by the targetDir element.

Cheers,
Chris

[jdewinne]

Added strip-components and member filters in v1.0.0