Add clarification text to CloudFormation template params

cloudy_mozdef/cloudformation/mozdef-parent.yml

@@ -19,7 +19,7 @@ Metadata:
       Parameters:
         - ACMCertArn
     - Label:
-        default: Authentication
+        default: 'OIDC Authentication : Fill out either this section or "Basic Auth Authentication"'
       Parameters:
         - OIDCAuthorizationEndpoint
         - OIDCClientId
@@ -27,6 +27,9 @@ Metadata:
         - OIDCIssuer
         - OIDCTokenEndpoint
         - OIDCUserInfoEndpoint
+    - Label:
+        default: 'Basic Auth Authentication : Fill out either this section or "OIDC Authentication"'
+      Parameters:
         - ALBBasicAuthSecret
     ParameterLabels:
       VpcId:
@@ -63,7 +66,7 @@ Parameters:
     Description: 'The VPC ID of the VPC to deploy in (Example : vpc-abcdef12)'
   PublicSubnetIds:
     Type: List<AWS::EC2::Subnet::Id>
-    Description: 'A comma delimited list of public subnet IDs (Example: subnet-abcdef12,subnet-bcdef123)'
+    Description: 'A comma delimited list of public subnet IDs of at least two subnets in different Availability Zones (Example: subnet-abcdef12,subnet-bcdef123)'
   InstanceType:
     Type: String
     Description: EC2 instance type, e.g. m1.small, m1.large, etc.