docs: add other required fields to user setup for clustered (#5639)

Author: david-rusnak

content/influxdb/clustered/admin/users/add.md

@@ -119,7 +119,12 @@ spec:
         jwksEndpoint: |-
           https://AUTH0_HOST/.well-known/openid-configuration
         users:
-          - AUTH0_USER_ID
+          # All fields are required but `firstName`, `lastName`, and `email` can be
+          # arbitrary values. However, `id` must match the user ID provided by Auth0.
+          - id: AUTH0_USER_ID
+            firstName: Marty
+            lastName: McFly
+            email: [email protected]
 ```
 
 {{% /code-placeholders %}}
@@ -152,7 +157,12 @@ spec:
         jwksEndpoint: |-
           https://login.microsoftonline.com/AZURE_TENANT_ID/discovery/v2.0/keys
         users:
-          - AZURE_USER_ID
+          # All fields are required but `firstName`, `lastName`, and `email` can be
+          # arbitrary values. However, `id` must match the user ID provided by Azure.
+          - id: AZURE_USER_ID
+            firstName: Marty
+            lastName: McFly
+            email: [email protected]
 ```
 
 {{% /code-placeholders %}}
@@ -249,7 +259,12 @@ admin:
     https://AUTH0_HOST/.well-known/openid-configuration
   # The list of users to grant access to Clustered via influxctl
   users:
-    - AUTH0_USER_ID
+    # All fields are required but `firstName`, `lastName`, and `email` can be
+    # arbitrary values. However, `id` must match the user ID provided by Auth0.
+    - id: AUTH0_USER_ID
+      firstName: Marty
+      lastName: McFly
+      email: [email protected]
 ```
 
 {{% /code-placeholders %}}
@@ -280,7 +295,12 @@ admin:
     https://login.microsoftonline.com/AZURE_TENANT_ID/discovery/v2.0/keys
   # The list of users to grant access to Clustered via influxctl
   users:
-    - AZURE_USER_ID
+    # All fields are required but `firstName`, `lastName`, and `email` can be
+    # arbitrary values. However, `id` must match the user ID provided by Azure.
+    - id: AZURE_USER_ID
+      firstName: Marty
+      lastName: McFly
+      email: [email protected]
 ```
 
 {{% /code-placeholders %}}

content/influxdb/clustered/install/configure-cluster/directly.md

@@ -747,7 +747,12 @@ spec:
         jwksEndpoint: |-
           https://AUTH0_HOST/.well-known/openid-configuration
         users:
-          - AUTH0_USER_ID
+          # All fields are required but `firstName`, `lastName`, and `email` can be
+          # arbitrary values. However, `id` must match the user ID provided by Auth0.
+          - id: AUTH0_USER_ID
+            firstName: Marty
+            lastName: McFly
+            email: [email protected]
 ```
 
 {{% /code-placeholders %}}
@@ -782,7 +787,12 @@ spec:
         jwksEndpoint: |-
           https://login.microsoftonline.com/AZURE_TENANT_ID/discovery/v2.0/keys
         users:
-          - AZURE_USER_ID
+          # All fields are required but `firstName`, `lastName`, and `email` can be
+          # arbitrary values. However, `id` must match the user ID provided by Azure.
+          - id: AZURE_USER_ID
+            firstName: Marty
+            lastName: McFly
+            email: [email protected]
 ```
 
 {{% /code-placeholders %}}

content/influxdb/clustered/install/configure-cluster/use-helm.md

@@ -764,7 +764,12 @@ admin:
     https://AUTH0_HOST/.well-known/openid-configuration
   # The list of users to grant access to Clustered via influxctl
   users:
-    - AUTH0_USER_ID
+    # All fields are required but `firstName`, `lastName`, and `email` can be
+    # arbitrary values. However, `id` must match the user ID provided by Auth0.
+    - id: AUTH0_USER_ID
+      firstName: Marty
+      lastName: McFly
+      email: [email protected]
 ```
 
 {{% /code-placeholders %}}
@@ -797,7 +802,12 @@ admin:
     https://login.microsoftonline.com/AZURE_TENANT_ID/discovery/v2.0/keys
   # The list of users to grant access to Clustered via influxctl
   users:
-    - AZURE_USER_ID
+    # All fields are required but `firstName`, `lastName`, and `email` can be
+    # arbitrary values. However, `id` must match the user ID provided by Azure.
+    - id: AZURE_USER_ID
+      firstName: Marty
+      lastName: McFly
+      email: [email protected]
 ```
 
 {{% /code-placeholders %}}