Bugfix: Test cases requiring sfs image rebuilding are not run

Signed-off-by: Junjie Mao <eternal.n08@gmail.com>
Remove uCore_run support for x86_64

Signed-off-by: Junjie Mao <eternal.n08@gmail.com>
Run test cases in each architecture in parallel

Signed-off-by: Junjie Mao <eternal.n08@gmail.com>
Merge branch 'mjj/amd64' into amd64-smp