Fix a network policy typo
Fix a network policy typo

When syncing network policy, it reports "Spurious object" error.
This patch fix the correct way to get network policies.

Signed-off-by: Tong Liu <8e9accffdaf13fe58a5341a6ef1846a2b9d23b6e@vmware.com>

shettyg/ovn-kubernetes,shettyg/ovn-kubernetes,shettyg/ovn-kubernetes