Added integration test for handling quotes in files by unmanaged files

This integration uses an rpm which ships a directory containing
quotes and spaces in its file name. This test creates a directory
and a file in that directory and checks if the tar ball is created
correctly.

Fixes #36.
Merge pull request #125 from SUSE/review_140820_added_integration_test_for_handling_quotes_in_files_by_unmanaged_files_

Added integration test for handling quotes in files by unmanaged files