releng: Add SWTBot integration tests for import wizard

releng: Add SWTBot integration tests for import wizard

Add tests for import from folder preserving folder structure.
Add tests for import from zip archive.
Add tests for import from tar.gz archive.
Programmatically create zip/tar.gz archives of test directory structure.
Add util method to select import items in folder tree and file table.
Add util method to recursively find trace project item.
Add org.apache.commons.compress to target definitions.
Fix project folder element matching regex.
Fix condition failure messages binding string.

Change-Id: Ib97d3bfc14f37edc882f0c6dc9ffafcc02753252
Signed-off-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-on: https://git.eclipse.org/r/82677
Reviewed-by: Hudson CI
Reviewed-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Tested-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>