enhance and fix log calls
enhance and fix log calls

Some of these changes are cosmetic (repeatedly calling klog.V instead of
reusing the result), others address real issues:

- Logging a message only above a certain verbosity threshold without
  recording that verbosity level (if klog.V().Enabled() { klog.Info... }):
  this matters when using a logging backend which records the verbosity
  level.

- Passing a format string with parameters to a logging function that
  doesn't do string formatting.

All of these locations where found by the enhanced logcheck tool from
https://github.com/kubernetes/klog/pull/297.

In some cases it reports false positives, but those can be suppressed with
source code comments.

Kubernetes-commit: edffc700a43e610f641907290a5152ca593bad79

kubernetes/client-go