fix: return error on interface not found and always clean up snat ep #14721

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10 errors and 1 warning

undefined: syscall.Stat_t

undefined: syscall.Stat_t

undefined: syscall.Fstat

undefined: syscall.Fstat

undefined: syscall.Stat_t

undefined: syscall.Fstat

undefined: syscall.Stat_t

undefined: syscall.Fstat

cannot use int(*ns) (value of type int) as syscall.Handle value in argument to syscall.Close

undefined: unix.IPPROTO_ROUTING

Restore cache failed: Dependencies file is not found in D:\a\azure-container-networking\azure-container-networking. Supported file pattern: go.sum