Add bundle target for OpenShift

Makefile

@@ -167,6 +167,9 @@ bundle: manifests kustomize ## Generate bundle manifests and metadata, then vali
 bundle-build: ## Build the bundle image.
 	docker build -f bundle.Dockerfile -t $(BUNDLE_IMG) .
 
+openshift-bundle-build: bundle ## Build the bundle image for OpenShift.
+	@printf "%s\n" '' 'LABEL com.redhat.openshift.versions="v4.6"' 'LABEL com.redhat.delivery.operator.bundle=true' 'LABEL com.redhat.delivery.backport=true' >> bundle.Dockerfile
+
 .PHONY: bundle-push
 bundle-push: ## Push the bundle image.
 	$(MAKE) docker-push IMG=$(BUNDLE_IMG)

bundle/manifests/k8s.nginx.org_nginxingresscontrollers.yaml

@@ -197,10 +197,10 @@ spec:
                     type: integer
                   secret:
                     description: A Secret with a TLS certificate and key for TLS termination
-                      of the Prometheus endpoint. If the argument is set,
-                      but the Ingress controller is not able to fetch the Secret from
-                      Kubernetes API, the Ingress Controller will fail to start. Format
-                      is namespace/name.
+                      of the Prometheus endpoint. The secret must be of the type kubernetes.io/tls.
+                      If specified, but the Ingress controller is not able to fetch
+                      the Secret from Kubernetes API, the Ingress Controller will
+                      fail to start. Format is namespace/name.
                     type: string
                 required:
                 - enable

bundle/manifests/nginx-ingress-operator.clusterserviceversion.yaml

@@ -381,11 +381,11 @@ spec:
                   periodSeconds: 10
                 resources:
                   limits:
-                    cpu: 100m
-                    memory: 30Mi
+                    cpu: 500m
+                    memory: 128Mi
                   requests:
-                    cpu: 100m
-                    memory: 20Mi
+                    cpu: 250m
+                    memory: 64Mi
                 securityContext:
                   allowPrivilegeEscalation: false
               securityContext: