Add 'projects' to the GraphQL NamespaceType
Expose projects on the NamespaceType for GraphQL queries, as mentioned here: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/27492#note_164548914
Expose projects on the NamespaceType for GraphQL queries, as mentioned here: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/27492#note_164548914