Fix Redis/PostgreSQL connection in support bundle troubleshoot collectors

[saurya]

Summary

Fixes the Redis "no such host" error in Troubleshoot support bundle collectors.

Changes

• Use FQDN for service URIs: Changed Redis and PostgreSQL URIs to use fully qualified domain names (.svc.cluster.local) to ensure DNS resolution works regardless of where the collector runs
• Fix Redis secret reference: Use dynamic secret name from Values.redis.auth.existingSecret instead of hardcoded {{ .Release.Name }}-redis pattern
• Bump chart versions: openhands 0.3.7, runtime-api 0.2.4

Details

The support bundle collector was failing with:

{"isConnected":false,"error":"dial tcp: lookup openhands-redis-master on ***:53: no such host"}

This was caused by:

1. Using short service names without the full Kubernetes DNS suffix
2. Redis secret name mismatch (the c2. Redis secret name mismatch (the c2. Redis secrol2. Redis secreking for openhands-redis)

Testing

• Helm lint passes
• Support bundle collection succeeds with Redis/Post- [ ] Support bundl checks