add container options to kubernetes resource

[zentron]

Background

Adds support for setting the ContainerOptions property on Kubernetes Targets

Results

Fixes: #608

Example

resource octopusdeploy_kubernetes_cluster_deployment_target test_eks{
  cluster_url                       = "https://cluster"
  environments                      = ["${octopusdeploy_environment.test_environment.id}"]
  name                              = "Test"
  ...
  container_options                 = "--priveleged"

[tleed5]

Looks good to me, before you merge this change could you regenerate the docs i.e. run go generate main.go in the project root

[zentron]

Thanks @tleed5 . Looks like there docs are a bit buggy since it seems to be adding all properties to all targets. Will consider that another task to sort out.