runtime-rs: workaround Dragonball compilation problem

Since the upstream rust-vmm is changing its dependency style towards
caret requirements in these days (more information:
rust-vmm/vm-memory#199) and it breaks Dragonball compilation frequently.

rust-vmm is expected to finish the changes this week and in order to not
break Kata CI due to Dragonball's compilation error, we will add
Cargo.lock file into /src/dragonball first and remove it later when
rust-vmm is stable.

fixes: kata-containers#5657
Signed-off-by: Chao Wu <[email protected]>

Author: studychao