Commits on May 14, 2020

1. kubeadm: fix flakes when performing etcd MemberAdd on slower setups …

   In slower setups it can take more time for the existing cluster
   to be in a healthy state, so the existing backoff of ~50 seconds
   is apparently not sufficient.
   
   The client dial can also fail for similar reasons.
   
   Improve kubeadm's join toleration of adding new etcd members.
   Wrap both the client dial and member add in a longer backoff
   (up to ~200 seconds).
   
   This particular change should be backported to the support skew.
   In a future change for master, all etcd client operations should be
   make consistent so that the etcd logic is in a sane state.

   

   neolit123 committed May 14, 2020
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