fix: eip qos

[shane965]

When an EIP is created, "cachedEip.Status.IP" is empty. This will cause the QoS settings to fail.

• Make sure you have followed Kube-OVN Code Style.

What type of this PR

Examples of user facing changes:

• Bug fixes

WHAT

🤖 Generated by Copilot at 644b2ca

Fix a bug in addEipQoS function that used the wrong IP address for EIP pods. This change improves the QoS policy for EIP pods in kube-ovn.

🤖 Generated by Copilot at 644b2ca

addEipQoS fixed
wrong IP caused bad policy
autumn leaves fall fast

HOW

🤖 Generated by Copilot at 644b2ca

• Fix a bug where the wrong IP address was passed to the addEipQoS function (link). Use v4ip, the IPv4 address of the EIP, instead of cachedEip.Status.IP, the IP address of the NAT gateway.

[github-actions]

• The commit message is missing, it should provide a brief description of the changes made in this patch.
• It's not clear what v4ip is and where it comes from. It might be necessary to add a comment explaining its origin and purpose.
• It would be better to use a more descriptive error message instead of just logging the error with "failed to add qos".