Feature title:  Publish 3.2 Customer Facing Package Index in PULP and corresponding base images to registry.redhat.io

Feature Overview:
This ticket is to track the publishing of customer facing package index and base images for RHOAI 3.2 with updated versioned variants.

Product(s) associated:

RHAIIS:: No
RHEL AI:: No
RHOAI: : yes

Goals:

• We should have URLs to indexes hosted on PULP for 3.2 release with new versioned variants as part of URL.
• Base images are configuered to use new 3.2 index
• New base images are released on registry.redhat.io

Requirements:
The variants supported will be:
1. cpu-ubi9 (aarch64, ppc64le, s390x, x86_64)
2. cuda12.9-ubi9 (aarch64, x86_64)
3. rocm7.0-ubi9 (x86_64)

These should be part of URL

Note that base images and builder images are out of sync as far as naming is concerned for variants.

Done - Acceptance Criteria:
The URLs to 3.2 index should be available for customers