Story (Required)

ClusterTask has been deprecated and will be removed in Pipelines Operator 1.17

So we have to use Tasks from the `openshift-pipelines` namespace instead of Cluster Tasks. 

Acceptance Criteria (Mandatory)

1. Remove ClusterTask list page tab in Tasks navigation menu
2. Remove ClusterTask list page in search menu
3. ClusterTask to be removed from quick search in Pipelines builder
4. List Tasks from the `openshift-pipelines` namespace in the Tasks quick search in Pipelines builder
5. Users should be able to create pipelines using the tasks from `openshift-pipelines` namespace in the Pipeline builder.
6. Updated all the test cases to remove ClusterTask and use Task from `openshift-pipelines` namespace.
7. Is Task from `openshift-pipelines` namespace to be shown in Tasks Navigation menu as separate tab?