Airship 2 is using Argo for workflow management, rather
than the builtin Armada workflow functionality. Hence, this
adds an apply_chart CLI command to apply a single chart at
a time, so that Argo can manage the higher level orchestration.
Airship 2 is also using kubernetes as opposed to Deckhand as the
document store. Hence this adds an ArmadaChart kubernetes CRD,
which can be consumed by the apply_chart CLI command. The chart
`dependencies` feature is intentionally not supported by the CRD,
as there are additional complexities to make that work, and ideally
this feature should be deprecated as charts should be building in
there dependencies before consumption by Armada.
Functional tests are included to excercise these features
against a minikube cluster.
Change-Id: I2bbed83d6d80091322a7e60b918a534188467239
c75898cd6a