bpf: Add bpf_get_sockops_uid_gid helper function

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7LTRR
CVE: NA

Reference: https://gitee.com/openeuler/kernel/commit/9d4b4a05ae00d7e5b2f8a33fdbdf974df182ccb7



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Add the function for bpf sock_ops hook to get sock's uid and gid.

Signed-off-by: Liu Jian <liujian56@huawei.com>
Conflicts:
	include/uapi/linux/bpf.h
	net/core/filter.c
	tools/include/uapi/linux/bpf.h
Signed-off-by: JofDiamonds <kwb0523@163.com>
Reviewed-by: wuchangye <wuchangye@huawei.com>