kubectl-ko: fix trace when u2oInterconnection is enabled

[zhangzujian]

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

What type of this PR

• Bug fixes

Which issue(s) this PR fixes:

Fixes #(issue-number)

WHAT

copilot:summary

copilot:poem

HOW

copilot:walkthrough

[github-actions]

• Priority 1: In line 306, the variable u2oIC is defined but not used. This can be removed to avoid confusion and unnecessary code.
• Priority 2: In line 303, the condition checks for the value of $logicalGateway to be "true". However, in line 307, it also checks for the value of $u2oIC to be "true". This might cause unexpected behavior if both variables have conflicting values. It would be better to use a single condition that checks for both variables at once.
• Priority 3: In line 358, the echo statement says "Using the gateway mac address as destination", but the code actually uses the logical gateway's MAC address. This can be confusing and should be updated to reflect the correct behavior.
• Priority 4: In line 361, the variable $typedName is used without being defined. This might cause errors or unexpected behavior and should be fixed.
• Priority 5: In line 365, the command tr -d '\r' is used to remove carriage return characters from the output of the ovn-nbctl command. This might not work on all systems and could cause issues. A more portable solution should be used instead.