2.0: API Review installation templates

[saheienko]

There are a few checks with usage of until loop that will hang indefinitely in case of error.

For instance: https://github.com/supergiant/control/blob/release-2.0/templates/poststart.tpl#L4

[eldridgeh]

@saheienko Is this still an issue?

[saheienko]

@eldridgeh yes, there are a few ones:

templates/clustercheck.sh.tpl:1:until $([ $(sudo kubectl get nodes|grep Ready|grep master|wc -l) -ge 1 ]); do printf '.'; sleep 5; done
templates/network.sh.tpl:5:until $([ $(sudo kubectl get po -n kube-system|grep apiserver |grep Running|wc -l) -ge 1 ]); do printf '.'; sleep 5; done