Add BackupStorageLocation API type

This commit only provides the data model for further work. It does not
implement any logic around locations, nor does it remove anything from
the Config API type.

Closes #736
Closes #732

Signed-off-by: Nolan Brubaker <nolan@heptio.com>

examples/common/00-prereqs.yaml

@@ -147,6 +147,21 @@ spec:
     plural: resticrepositories
     kind: ResticRepository
 
+---
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: backupstoragelocations.ark.heptio.com
+  labels:
+    component: ark
+spec:
+  group: ark.heptio.com
+  version: v1
+  scope: Namespaced
+  names:
+    plural: backupstoragelocations
+    kind: BackupStorageLocation
+
 ---
 apiVersion: v1
 kind: Namespace