Make loader tests more precise

Until now the loader tests did not detect if a file in testdata existed,
but was missing from the actual results. This patch fixes the problem.
It also removes various files that are not needed.
The testdata folder now represents which files end up in a cluster 1:1.

cli/internal/helm/testdata/QEMU/constellation-services/charts/ccm/templates/clusterrolebinding.yaml

@@ -1,12 +0,0 @@
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRoleBinding
-metadata:
-  name: system:cloud-controller-manager
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: cluster-admin
-subjects:
-  - kind: ServiceAccount
-    name: cloud-controller-manager
-    namespace: testNamespace

cli/internal/helm/testdata/QEMU/constellation-services/charts/ccm/templates/serviceaccount.yaml

@@ -1,5 +0,0 @@
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: cloud-controller-manager
-  namespace: testNamespace