Fixes: kubernetes#90581 (the first part)
When `Close()` is invoked on an empty queue, the control loop inside `Pop()` has a small chance of missing the signal and blocks indefinitely due to a race condition. This PR eliminates the race and allows the control loop inside any blocking `Pop()` to successfully exit after Close() is called.
Kubernetes-commit: d8b90955519d10b99415515f8314dd6d35caae8d
2. Remove staging/src/k8s.io/client-go/tools/cache from .golint_failures;
3. Fix some typo from comments.
Kubernetes-commit: 0e0e1f7daba0a6ae6dd59df0a1bb643c323ad8cb
Initial allocation of several maps as the sizes are known
Signed-off-by: Adrián Orive <adrian.orive.oneca@gmail.com>
Kubernetes-commit: 2299f45f52464beff889fce7be1f66642a92b791