fixed: kubelet probe failed with envoy redirect

[hysyeah]

• Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Bug fix

• What is the current behavior? (You can also link to an open issue here)

1. kubelet probe failed with envoy redirect to auth
2. reinjection if a pod already has set sidecar config

• What is the new behavior (if this is a feature change)?

1. fixed: kubelet probe failed with envoy redirect to auth
2. fixed: reinjection if a pod already has set sidecar config

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

• Other information: