Resolve "[ENG] /partners/technology-partners/sub pages migration"

The following partner sub pages are now in Contentful:

• https://about.gitlab.com/partners/technology-partners/aws/
• https://about.gitlab.com/partners/technology-partners/google-cloud-platform/
• https://about.gitlab.com/partners/technology-partners/hashicorp/
• https://about.gitlab.com/partners/technology-partners/ibm/
• https://about.gitlab.com/partners/technology-partners/redhat/
• https://about.gitlab.com/partners/technology-partners/vmware-tanzu/

This MR includes code to get this content working within Buyer Experience.

Closes #2973 (closed)