Marwan/summit compute config fixes (#345)

Address the issues with the current compute configs in Ray Summit
Templates after testing in staging.

A prompt turnaround here would be very much appreciated

Summary of changes:
- [worker_node_types instead of
worker_nodes](b4ccef3)
- [add head node
name](a1c7367)
- [set custom resources
correctly](97556ae)

configs/ray-summit-end-to-end-llms/aws.yaml

@@ -1,10 +1,11 @@
 head_node_type:
+  name: head_node
   instance_type: m5.4xlarge
   resources:
     cpu: 0
     gpu: 0
 
-worker_nodes:
+worker_node_types:
   - instance_type: m5.4xlarge
     name: 16CPU-64GB
     min_workers: 1

configs/ray-summit-multi-modal-search/aws.yaml

@@ -1,4 +1,5 @@
 head_node_type:
+  name: head_node
   instance_type: m5.4xlarge
   resources:
     cpu: 0

configs/ray-summit-rag/aws.yaml

@@ -1,9 +1,11 @@
 head_node_type:
   instance_type: m5.4xlarge
+  name: head_node
   resources:
     cpu: 0
     gpu: 0
-    is_head_node: 1
+    custom_resources:
+      is_head_node: 1
 
 worker_node_types:
   - instance_type: g6.4xlarge

configs/ray-summit-stable-diffusion/aws.yaml

@@ -1,10 +1,11 @@
 head_node_type:
+  name: head_node
   instance_type: g6.4xlarge
   resources:
     cpu: 12
     gpu: 1
 
-worker_nodes:
+worker_node_types:
   - instance_type: g6.4xlarge
     name: '1xL4:16CPU-64GB'
     min_workers: 1