Update rego rule syntax

Author: NickLarsenNZ

modules/tutorials/examples/ldap-auth/trino-opa-bundle-snippet.yaml

@@ -2,19 +2,26 @@ data:
   trino.rego: |
     package trino
 
-    import future.keywords.in
-
     default allow = false
 
-    allow {
+    allow if {
       is_alice
     }
-    extended[i] {
+
+    batch contains i if {
       some i
       input.action.filterResources[i]
       is_alice
     }
 
-    is_alice() {
+    batch contains i if {
+      some i
+      input.action.operation == "FilterColumns"
+      count(input.action.filterResources) == 1
+      input.action.filterResources[0].table.columns[i]
+      is_alice
+    }
+
+    is_alice() if {
       input.context.identity.user == "alice"
     }

modules/tutorials/pages/authentication_with_openldap.adoc

@@ -317,7 +317,7 @@ Fetch the snippet as before:
 [source,bash]
 include::example$ldap-auth/70-modify-trino-opa-bundle.sh[tag=get-yaml]
 
-Apply this patch:
+Update the ConfigMap to look like the below:
 
 [source,yaml]
 ----