fix coo namespace

Author: Tai-RedHat

web/cypress/e2e/coo/02.acm_alerting_ui.cy.ts

@@ -5,8 +5,9 @@ import { commonPages } from '../../views/common';
 import { nav } from '../../views/nav';
 import { acmAlertingPage } from '../../views/acm-alerting-page';
 
+const COO_NAMESPACE = Cypress.env('COO_NAMESPACE') || 'openshift-cluster-observability-operator';
 const MCP = {
-  namespace: 'openshift-cluster-observability-operator',
+  namespace: COO_NAMESPACE,
   packageName: 'cluster-observability-operator',
   operatorName: 'Cluster Observability Operator',
   config: {