CVE-2022-39253 in git meant file:// urls within submodules were disabled. Add
a parameter to the commands in the tests to allow this to continue to work.
(Bitbake rev: c90d57497b9bcd237c3ae810ee8edb5b0d2d575a)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>