Introduce ResourceSets to make loading of resource files more flexible

This MR introduces so called ResourceSets that allow loading Kubernetes manifests either via ConfigMap or from the file system.

Closes #240 (closed)

helm/templates/theodolite/crd-benchmark.yaml

@@ -128,6 +128,9 @@ spec:
                 type: array
                 items:
                   type: object
+                  oneOf:
+                    - required: [configMap]
+                    - required: [fileSystem]
                   properties:
                     configMap:
                       type: object
@@ -151,6 +154,9 @@ spec:
                 type: array
                 items:
                   type: object
+                  oneOf:
+                    - required: [configMap]
+                    - required: [fileSystem]
                   properties:
                     configMap:
                       type: object