Prevents subshell commands from failing to parse options
when having defined a whitespace in the VERSION_DIST.
As the called resulting images unlikely will handle
whitespace correctly, we replace them by "-".
Signed-off-by: Sven Roederer <S.Roederer@colvistec.de>
(cherry picked from commit 4071398b13aeee873cb5a48b00b6c90074763d5f)
80a99d9cf7
