* Migrate the Calico function in airshipctl to deploy the
Tigera Operator, instead of raw manifests
* Added a new executor `kubernetes-apply-nowait` to run phase with nowait
* nowait had to be done for phase `initinfra-networking-<ephemeral/target>`
because of an issue with phase status-check for a specific resource
`installation` which is part of tigera operator CR
Change-Id: I748813667cdc5d05c9f0758d9c1e28082d79bdbe
Closes: #368