go mod tidy all modules

go mod tidy all modules

- this cleans up the mod file by removing all
  unused dependencies and sort them
- all modules except ovnaction, ncm and rsync
- those modules have issues resolving some
  dependencies, likely because they refer to
  2020 versions of some of the github.com/onap/k8s
  submodules
- do not use the prometheus log struct in one k8splugin
  file to get rid of a prometheus dependency

Issue-ID: MULTICLOUD-1516
Change-Id: I6c1d79cba1d4a7001d962c51730c4d00a53c617f
Signed-off-by: Fiete Ostkamp <fiete.ostkamp@telekom.de>