Ensure a directory added to .containerignore on client is not included
in tar sent to remote podman API service
* Clean up podman invocations to not include duplicate --remote and
--url flags
* Use pkill vs. pgrep when cleaning up podman API service in tests
* Add exit code when logging error when testing
Closes#13535
Signed-off-by: Jhon Honce <jhonce@redhat.com>