This release includes the following changes:

• Kubernetes v1.17.6 (#6183)
• Pin docker client version (#6163 and #6179)
• Bugfix kubernetes-dashboard template (#6066 and #6179)
• Create namespace when dashboard deployment uses customized namespace (#6107 and #6179)
• Bugfix apiserver port when upgrading a cluster with a custom apiserver port (#6136 and #6179)