Move non-install guide docs around

These documents are not part of an install guide, move them to
contributor docs.

Change-Id: Icd420a651b930f8ee8a52f39c88b2dc1961ec12e

doc/source/contributor/index.rst

@@ -1,4 +1,12 @@
 Developer Guide
 ===============
 
-TBD
+.. toctree::
+   :maxdepth: 2
+
+   api_routes
+   metadata_structure
+   client_structure
+   api_documents
+   known_issues
+

doc/source/install/index.rst

@@ -8,13 +8,7 @@ Backup/Restore and DR service
    install
    verify
    next-steps
-   api_routes
-   metadata_structure
-   client_structure
-   api_documents
-   known_issues
-
 
 This chapter assumes a working setup of OpenStack following the
 `OpenStack Installation Tutorial
-<https://docs.openstack.org/project-install-guide/ocata/>`_.
+<https://docs.openstack.org/project-install-guide/ocata/>`_.

doc/source/install/next-steps.rst

@@ -4,4 +4,4 @@ Next steps
 Your OpenStack environment now includes the freezer-api service.
 
 To add additional services, see
-https://docs.openstack.org/install-guide/.
+https://docs.openstack.org/install/