ci(manager): refactor jenkinsfiles - update filenames, remove invalid

- Removed some .jenkinsfiles for which usage in master and manager-3.3
Jenkins spaces was not found;
- Longevity files moved to separate directory;
- Renamed some of the files to show the actual OS they run SM on. In
most of the cases, just replaced centos by ubuntu22.

jenkins-pipelines/manager/centos-manager-backup-and-restore-4TB-single-node.jenkinsfile → jenkins-pipelines/manager/ubuntu22-manager-backup-no-delta.jenkinsfile

@@ -6,10 +6,10 @@ def lib = library identifier: 'sct@snapshot', retriever: legacySCM(scm)
 managerPipeline(
     backend: 'aws',
     region: 'us-east-1',
-    test_name: 'mgmt_cli_test.MgmtCliTest.test_backup_and_restore_only_data',
-    test_config: 'test-cases/manager/manager-backup-and-restore-4TB-single-node.yaml',
+    test_name: 'mgmt_cli_test.MgmtCliTest.test_no_delta_backup_at_disabled_compaction',
+    test_config: 'test-cases/manager/manager-no-delta-backup-set-dataset.yaml',
 
     post_behavior_db_nodes: 'destroy',
     post_behavior_loader_nodes: 'destroy',
-    post_behavior_monitor_nodes: 'destroy'
+    post_behavior_monitor_nodes: 'destroy',
 )

jenkins-pipelines/manager/ubuntu22-manager-backup.jenkinsfile

@@ -5,9 +5,9 @@ def lib = library identifier: 'sct@snapshot', retriever: legacySCM(scm)
 
 managerPipeline(
     backend: 'aws',
-    region: 'us-east-1',
-    test_name: 'mgmt_cli_test.MgmtCliTest.test_no_delta_backup_at_disabled_compaction',
-    test_config: """['test-cases/manager/manager-no-delta-backup-set-dataset.yaml']""",
+    region: 'us-west-2',
+    test_name: 'mgmt_cli_test.MgmtCliTest.test_backup_feature',
+    test_config: 'test-cases/manager/manager-regression-singleDC-set-distro.yaml',
 
     post_behavior_db_nodes: 'destroy',
     post_behavior_loader_nodes: 'destroy',