Followed this document to validate cert-manager manually , all the steps were successful.
https://docs.google.com/document/d/1ZX2Lv_iXFdjfVON7oQUvCs4u294BzjCO-ICeWpAL_J0/edit?pli=1

When we run the testcase from maistra test tool it is failing with the below error:

 install.go:30: cert-manager-operator is already installed
    istio_csr_test.go:63:    
    istio_csr_test.go:63: STEP 1: Uninstall existing SMCP
    istio_csr_test.go:64:    Deleting namespaces: [istio-system]
    istio_csr_test.go:64:    Creating namespaces: [istio-system]
    istio_csr_test.go:66:    
    istio_csr_test.go:66: STEP 2: Create intermediate certificate for Istio
    istio_csr_test.go:69:    
    istio_csr_test.go:69: STEP 3: Add jetstack repo to helm
    istio_csr_test.go:72:    
    istio_csr_test.go:72: STEP 4: Install cert-manager-istio-csr
    helm.go:70:    FATAL: Command failed: helm install istio-csr jetstack/cert-manager-istio-csr -n istio-system --version v0.10.0 -f - <<EOF
        replicaCount: 2
        
        image:
          repository: quay.io/jetstack/cert-manager-istio-csr
          tag: v0.10.0
          pullSecretName: ""
        
        app:
          certmanager:
            namespace: istio-system
            issuer:
              group: cert-manager.io
              kind: Issuer
              name: istio-ca
        
          controller:
            configmapNamespaceSelector: "maistra.io/member-of=istio-system"
            leaderElectionNamespace: istio-system
        
          istio:
            namespace: istio-system
            revisions: ["basic"]
        
          server:
            maxCertificateDuration: 5m
        
          tls:
            certificateDNSNames:
            # This DNS name must be set in the SMCP spec.security.certificateAuthority.cert-manager.address
            - cert-manager-istio-csr.istio-system.svc
        
        EOF
        WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /root/.kube/config
        WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /root/.kube/config
        Error: INSTALLATION FAILED: values don't meet the specifications of the schema(s) in the following chart(s):
        cert-manager-istio-csr:
        - image: Additional property pullSecretName is not allowed
        
        error: exit status 1
    test.go:77: 
    test.go:79: Test failed in 9.96s (excluding cleanup)
    test.go:97: Capturing cluster state using must-gather brew.registry.redhat.io/rh-osbs/openshift-service-mesh-istio-must-gather-rhel8:2.6.0
    test.go:101: /root/daniya/maistra-test-tool/tests/result-20240812093653/v2.6/failures-must-gather/20240812093909-TestIstioCsr
    istio_csr_test.go:51: 
    istio_csr_test.go:51: Performing cleanup
    helm.go:80:    FATAL: Command failed: helm uninstall istio-csr -n istio-system
        WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /root/.kube/config
        WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /root/.kube/config
        Error: uninstall: Release not loaded: istio-csr: release: not found
        error: exit status 1