[Release] Increase node memory by 2X in many_ppo test. (#19591)

release/long_running_tests/long_running_tests.yaml

@@ -78,11 +78,11 @@
 - name: many_ppo
   cluster:
     app_config: app_config.yaml
-    compute_template: tpl_cpu_3.yaml
+    compute_template: many_ppo.yaml
 
   run:
     timeout: 86400
-    prepare: python wait_cluster.py 3 600
+    prepare: python wait_cluster.py 1 600
     script: python workloads/many_ppo.py
     long_running: True
 

release/long_running_tests/many_ppo.yaml

@@ -0,0 +1,17 @@
+cloud_id: {{env["ANYSCALE_CLOUD_ID"]}}
+region: us-west-2
+
+max_workers: 0
+
+head_node_type:
+    name: head_node
+    instance_type: m5.4xlarge
+
+aws:
+  TagSpecifications:
+    - ResourceType: "instance"
+      Tags:
+        - Key: anyscale-user
+          Value: '{{env["ANYSCALE_USER"]}}'
+        - Key: anyscale-expiration
+          Value: '{{env["EXPIRATION_2D"]}}'