* Use admin kubeconfig instead of supervisor for etcd snapshot CLI
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

* Skip creating CRDs and setting up event recorder for CLI controller context
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

* Don't export functions not needed outside the etcd package
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

* Reorganize Driver interface and etcd driver to avoid passing context and config into most calls
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

* Clear remove annotations on cluster reset; refuse to delete last member from cluster
Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

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Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
Co-authored-by: Brad Davidson <brad.davidson@rancher.com>