When checking out repositories, check if a file <filename>.lock.<ext>
exists next to the file specified first on the kas CLI. In case this
file exists and the --update option is not specified, automatically
append this file to the kas CLI before performing any other kas
operations.
When --update is specified, the lockfile is ignored.
Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>