Feature Request: defer connecting to gate client until necessary

[dpkirchner]

While bootstrapping a new project that defines some spinnaker resources, you will see errors when the spinnaker provider initializes during a plan. That's because it tries to connect immediately, before spinnaker has been installed. This means you have to comment out all of the spinnaker provider+resources before you can begin.

IMO, it'd be useful to defer the connection until the resource is about to be created. An error will likely still occur as the provider may not be able to connect to the server (it takes a while for spinnaker to start), but at least the plan and apply-sans-spinnaker steps will run.

I'll submit a PR for this shortly. I've been using it for about a week while destroying/recreating my projects and other than the above mentioned error it works fine.