build: do not checkout submodules all the time
build: do not checkout submodules all the time

we want them to be checked out only when they are not checked out
(the first time), otherwise we want to keep the current version

Signed-off-by: Marek Chalupa <a05df156a69ad59faa9af9b666ef78009594c145@gmail.com>

staticafi/symbiotic,staticafi/symbiotic,staticafi/symbiotic,staticafi/symbiotic