Add CDH test enabling HDFS HA

We add three HDFS_JOURNALNODE roles in the cluster template to
enable HDFS NameNode HA. We did not directly modified in
cdh-5.4.0.yaml.mako file, or it makes CI test too long and may
exceed the timeout.

Partial-implements: blueprint cdh-ha-support
Change-Id: I173027c0511ee5e7f76ea485b13089a3a5839ece

etc/scenario/sahara-ci/cdh-ha.yaml.mako

@@ -0,0 +1,74 @@
+clusters:
+  - plugin_name: cdh
+    plugin_version: 5.4.0
+    image: ${cdh_5_4_0_image}
+    node_group_templates:
+      - name: worker-dn
+        flavor: ${ci_flavor_id}
+        node_processes:
+          - HDFS_DATANODE
+          - HDFS_JOURNALNODE
+        volumes_per_node: 2
+        volumes_size: 2
+        auto_security_group: true
+        node_configs:
+          &ng_configs
+          DATANODE:
+            dfs_datanode_du_reserved: 0
+      - name: worker-nm
+        flavor: ${ci_flavor_id}
+        node_processes:
+          - YARN_NODEMANAGER
+          - HDFS_JOURNALNODE
+        auto_security_group: true
+      - name: worker-nm-dn
+        flavor: ${ci_flavor_id}
+        node_processes:
+          - YARN_NODEMANAGER
+          - HDFS_DATANODE
+          - HDFS_JOURNALNODE
+        volumes_per_node: 2
+        volumes_size: 2
+        auto_security_group: true
+        node_configs:
+          *ng_configs
+      - name: manager
+        flavor: ${large_flavor_id}
+        node_processes:
+          - CLOUDERA_MANAGER
+        auto_security_group: true
+      - name: master-core
+        flavor: ${medium_flavor_id}
+        node_processes:
+          - HDFS_NAMENODE
+          - YARN_RESOURCEMANAGER
+          - ZOOKEEPER_SERVER
+        auto_security_group: true
+      - name: master-additional
+        flavor: ${medium_flavor_id}
+        node_processes:
+          - OOZIE_SERVER
+          - YARN_JOBHISTORY
+          - HDFS_SECONDARYNAMENODE
+        auto_security_group: true
+    cluster_template:
+      name: cdh540
+      node_group_templates:
+        manager: 1
+        master-core: 1
+        master-additional: 1
+        worker-nm-dn: 1
+        worker-nm: 1
+        worker-dn: 1
+      cluster_configs:
+        HDFS:
+          dfs_replication: 1
+    cluster:
+      name: ${cluster_name}
+    scenario:
+      - run_jobs
+    edp_jobs_flow:
+      - pig_job
+      - mapreduce_job
+      - mapreduce_streaming_job
+      - java_job