- added validation to delete_directory - added shlex path checks to count_files_in_directory, delete_directory,find_most_recent_file, extract_tar_archive - added logic for both kinds of tar files to extract_tar_archive Change-Id: I5d1ca1c848f0cd61b2297b44284a1866af3e611a Signed-off-by: Haadia Mufti <haadia.mufti@windriver.com>