fix: Clean up install-config.yaml errors for bastion registry

- Set additionalTrustBundle to empty string (HTTP registry, no cert needed)
- Remove imageContentSources (conflicts with imageDigestSources from IDMS)
- Remove bootstrapExternalStaticGateway (unknown field, causes warning)
- Keep bootstrapExternalStaticIP for UPI static bootstrap IP

Fixes:
- "invalid block" error for additionalTrustBundle
- "cannot set imageContentSources and imageDigestSources at the same time" error

Author: butler54

rhdp-isolated/bastion/install-config.yaml.j2

@@ -42,14 +42,9 @@ platform:
     computeSubnet: {{ worker_subnet_name }}
     networkResourceGroupName: {{ RESOURCEGROUP }}
     bootstrapExternalStaticIP: "10.0.10.4"
-    bootstrapExternalStaticGateway: "10.0.10.1"
 publish: External
 pullSecret: '{{ pull_secret }}'
 sshKey: '{{ ssh_key }}'
 imageDigestSources:
 {{ image_digest_sources | indent(2, True) }}
-imageContentSources:
-- mirrors:
-  - 10.0.1.4:5000
-  source: 10.0.1.4:5000
 

rhdp-isolated/bastion/rhdp-cluster-define-disconnected.py

@@ -148,7 +148,7 @@ def setup_install(
 
     # Bastion registry uses HTTP (no TLS), so no certificate needed
     rprint("[info]Using bastion-hosted HTTP registry (no TLS certificate needed)[/info]")
-    additional_trust_bundle = "# Bastion registry uses HTTP (no TLS)"
+    additional_trust_bundle = ""  # Empty string for HTTP registry
 
     # Parse IDMS files to imageDigestSources
     cluster_resources_dir = pattern_dir / "cluster-resources"