Remove kube-proxy's automatic clean up logic

[shekhar-rajak]

Enhancement Description

• One-line enhancement description (can be used as a release note):

Remove kube-proxy's automatic clean up logic

• Kubernetes Enhancement Proposal:

Remove any clean up functionality in kube-proxy that is done automatically/implicitly.
More concretely, kube-proxy should only attempt to clean up its proxy rules when the --cleanup flag is set.

• Discussion Link:
• Primary contact (assignee): @vllry @andrewsykim
• Responsible SIGs: sig-network
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y):
  • Beta release target (x.y):
  • Stable release target (x.y):
• Alpha
  • KEP (k/enhancements) update PR(s):
  • Code (k/k) update PR(s):
  • Docs (k/website) update PR(s):

Implementation History

• 2019-03-14: initial bug report was created where kube-proxy would flush iptable chains even when the proxy mode was iptables

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[shekhar-rajak]

Migrating all the old template keps to new template : #2446

[thockin]

Implemented