tree 7ddf315fadbfb0c56a16d256c2b057f613e360a8
parent 6f27d1b48489950e22e9e73a66110def3c511b3c
author Aleksei Kasatkin <akasatkin@mirantis.com> 1544114098 +0100
committer Aleksei Kasatkin <akasatkin@mirantis.com> 1544625481 +0100

Add verification of Calico cluster state after upgrade

Simple verification of Calico cluster state and Calico components
is added to ensure that upgrade went fine.

Verification is done in several steps:
1. Check Calico cluster and clients' versions. Versions on different
   nodes should match and should comply with "v3.x" pattern.
2. Check Calico nodes' statuses. Every cluster node should have
   'calico-node' running and BGP peers of every node sholud be
   reachable.
3. Check that 'calico-kube-controllers' pod is running. One such pod
   should be running in the Kubernetes cluster.

Appropriate warning messages are issued for every failed verification
step.

Related-Prod: PROD-24925 (PROD:24925)

Change-Id: Ib7257894b73e4cb9c61e6c9f29dba0212afc40f4