update eks form to include dynamic cidr range

api/server/handlers/infra/forms.go

@@ -387,6 +387,13 @@ tabs:
       placeholder: "ex: 10"
       settings:
         default: 10
+- name: advanced
+  label: Advanced
+  sections:
+  - name: spot_instance_should_enable
+    contents:
+    - type: heading
+      label: Spot Instance Settings
     - type: checkbox
       variable: spot_instances_enabled
       label: Enable spot instances for this cluster.
@@ -399,6 +406,16 @@ tabs:
       label: Assign a bid price for the spot instance (optional).
       variable: spot_price
       placeholder: "ex: 0.05"
+  - name: net_settings
+    contents:
+    - type: heading
+      label: Networking Settings
+    - type: string-input
+      label: "Add a different CIDR range prefix (first two octets: for example 10.99 will create a VPC with CIDR range 10.99.0.0/16)."
+      variable: cluster_vpc_cidr_octets
+      placeholder: "ex: 10.99"
+      settings:
+        default: "10.99"
 `
 
 const gcrForm = `name: GCR