Rename observability bundle

Avoid having nested bundles; rename bundles/acm/observability to
bundles/acm-observability.

Part-of: nerc-project/operations#285

cluster-scope/bundles/acm-observability/kustomization.yaml

@@ -0,0 +1,11 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ../../base/core/namespaces/open-cluster-management-observability
+  - ../../base/objectbucket.io/objectbucketclaims/observability
+  - ../../base/external-secrets.io/externalsecrets/open-cluster-management-observability-thanos-object-storage
+  - ../../base/external-secrets.io/externalsecrets/open-cluster-management-observability-multiclusterhub-operator-pull-secret
+  - ../../base/external-secrets.io/externalsecrets/open-cluster-management-observability-alertmanager-config
+  - ../../base/core/configmaps/thanos-ruler-custom-rules/
+  - ../../base/core/configmaps/observability-metrics-custom-allowlist/
+  - ../../base/observability.open-cluster-management.io/multiclusterobservabilities/observability

cluster-scope/overlays/nerc-ocp-infra/kustomization.yaml

@@ -7,7 +7,7 @@ resources:
 - ../common
 - ../../bundles/openshift-gitops
 - ../../bundles/acm
-- ../../bundles/acm/observability
+- ../../bundles/acm-observability
 - ../../bundles/hostpath-provisioner
 - ../../bundles/vault
 - ../../bundles/patch-operator