vmm: run unit tests with SECCOMP_LEVEL_NONE
vmm: run unit tests with SECCOMP_LEVEL_NONE

Unit tests all run in the same process. If we set the advanced
seccomp filter unit tests will fail.

Signed-off-by: Andreea Florescu <f68a7d732e796861f8e79ea704b43a5ee52eddaf@amazon.com>

firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker