fix: skip kubeconfig update for in-cluster contexts

[Copilot]

• Understand the issue: SetCurrentContext tries to update kubeconfig file even for in-cluster configs with empty ConfigPath
• Add check in SetCurrentContext to skip kubeconfig file update when ConfigPath is empty
• Add unit tests to verify the fix works correctly
• Run tests to ensure no regressions
• Reply to the comment with the fix
• Code review completed - no issues found
• Security scan completed - no vulnerabilities found
• Fix gofmt linting error (trailing whitespace)

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[Copilot]

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[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• example.com
  • Triggering command: /tmp/go-build1657329062/b001/cluster.test /tmp/go-build1657329062/b001/cluster.test -test.testlogfile=/tmp/go-build1657329062/b001/testlog.txt -test.paniconexit0 -test.timeout=10m0s -test.v=true -test.run=TestInClusterConfig d/policy/v1/fake-ifaceassert ux_amd64/compile-nilfunc -p (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[basebandit]

lgtm

[basebandit]

@copilot the run lint job is failing with a gofmt error.

[Copilot]

@copilot the run lint job is failing with a gofmt error.

Fixed the gofmt error by removing trailing whitespace in cluster/manager_test.go. Commit: 9df4a36