Split addSeccomp into addSeccompSyscall, addSeccompArch, addSeccompDefault, Fix bug in addSeccompSyscall when specs.Arg == nil.
Split addSeccomp into addSeccompSyscall, addSeccompArch, addSeccompDefault,
Fix bug in addSeccompSyscall when specs.Arg == nil.

Signed-off-by: linzhinan(zen Lin) <dcaf8624321f9dc0e5d38c2534fb14e619ae2d49@huawei.com>

wking/ocitools-v2,hmeng-19/ocitools,hmeng-19/ocitools,opencontainers/runtime-tools,opencontainers/runtime-tools,wking/ocitools-v2,liangchenye/ocitools,liangchenye/ocitools,opencontainers/ocitools,opencontainers/ocitools