Update page metadata to Distribution

Update page metadata to Distribution

doc/install/aws/eks_clusters_aws.md

 ---
-type: reference, concepts
 stage: Enablement
-group: Alliances
+group: Distribution
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 

doc/install/aws/gitlab_hybrid_on_aws.md

 ---
-type: reference, concepts
 stage: Enablement
-group: Alliances
+group: Distribution
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 

doc/install/aws/gitlab_sre_for_aws.md

 ---
 stage: Enablement
-group: Alliances
+group: Distribution
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 comments: false
 description: Doing SRE for GitLab instances and runners on AWS.
-type: index
 ---
 
 # GitLab Site Reliability Engineering for AWS **(FREE SELF)**