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delete legacy acls when upgrading to v1.13.x (#4742)

the acls in v1.13.x are in tier 2 rather than tier 0 in v1.12.x, the legacy acls
may cause some unexpected behaviors because acls in tier 0 have the higest priority.
we should delete legacy acls and recreate them when upgrading to v1.13.x.

Signed-off-by: suo <yugsuo@gmail.com>