```
E0926 09:50:20.371312       1 init.go:347] failed to init node kube-ovn-worker. address 100.64.0.3: AddressConflict
E0926 09:50:20.377591       1 init.go:347] failed to init node kube-ovn-control-plane. address 100.64.0.2: AddressConflict

```

Consider the following scenario:
1. A StatefulSet Pod with random IP address allocation is deleted
and soon kube-ovn-contrller is restarted;
2. kube-ovn-controller initailizes IPAM on startup and no IPAM record
for the deleted StatefuleSet Pod is created;
3. A new StatefulSet Pod with the same name is created and
kube-ovn-controller assigns a new IP address to it.

Changes and new features:
1. Introduce new CRD `ProviderNetwork` for underlay/vlan networking management;
2. Specify provider inetrface on nodes in provider network;
4. Exclude nodes in provider network;
5. Link local IPv6 address and route will NOT be transferred to OVS bridge;
6. Builtin hybrid network support - create/update/delete underlay/vlan networks dynamically;
7. Set MTU of Pod interface to provider interface's MTU on each node;
8. Add new fields in CRD `Vlan`.

staticcheck ST1019 – Importing the same package multiple times.
Visit https://staticcheck.io/docs/checks#ST1019 for more details.

Signed-off-by: Wan Junjie <wanjunjie@bytedance.com>

Co-authored-by: feixiang43 <352447595@qq.com>

Reduce number of openflow need to be installed on node.