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: 8ea8e443005ad92f4ad264d9abd9e90e33fb5c17)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>