This patch improves safe_copy_dir() and related functions:
* clean up & simplify implementation
* path sanity checks no longer depend on $PROJECT.
* safe_copy_dir(): --chown: resolve user name to UID on host
* safe_copy_dir(): interpret dest_dir as in "cp" command,
but src_dir as in "rsync"
Story: 2010226
Task: 46386
Signed-off-by: Davlet Panech <davlet.panech@windriver.com>
Change-Id: I9428d9fceb50f78840fc9fb93e8a6a132425cddc
93f0b873b6