rgw, radosgw-admin: bucket link uses bucket instance id now

Fixes: 7499
We need to link user to a specific bucket instance. This updates both
the radosgw-admin link command, and the RESTful admin api.

Signed-off-by: Yehuda Sadeh <yehuda@inktank.com>
doc: Admin API usage for quotas. Needs additional clarification on syntax.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: New admin guide for Ceph Object Gateway. Needs some clarification (todo).

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Reworked the simple configuration guide to be more generic.

Changes include removing keystone and putting it into a separate document,
removing user config and putting it into an admin guide, and creating
separate config examples for CentOS/RHEL and Debian/Ubuntu. Needs
clarification on chown/chmod.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Added new docs to index.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Created standalone doc for Keystone Integration.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Distro specific rgw.conf example.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Distro specific rgw.conf example.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Added new cache tiering doc to main docs.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Added new cache tiering doc to index/TOC.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Added cache tiering settings to ceph osd pool set.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Fix hyperlink to CRUSH maps.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
Merge branch 'master' of https://github.com/ceph/ceph into wip-doc-radosgw
Merge branch 'master' of https://github.com/ceph/ceph into wip-doc-radosgw
doc: Added rhel-6-server-optional-rpms repo.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Fixed inconsistent header.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Verified RHEL configuration.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Ensure fastcgi socket doesn't clash with gateway daemon socket.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
mon: OSDMonitor: return immediately if 'osd tier cache-mode' is a no-op

Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
crush/mapper.c: fix printf format for unsigned variable

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>