Update RBD doc for OpenStack

Some updates from Icehouse, best practice configurations and
explanations.

Signed-off-by: Sébastien Han <sebastien.han@enovance.com>

Conflicts:
	doc/rbd/rbd-openstack.rst
doc: Fix a typo in the rbd man page

's/specifially/specifically'

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
doc: fix a few typos in architecture page

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
doc: Fix a few typos in the install docs

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
doc: fix a few typos in rbd docs

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
doc: fix a few typos in the dev docs

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
doc: fix a few typos in rados docs

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
doc: fix a few typos in radosgw docs

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
doc: fix a typo in quickstart doc

* doc/start/documenting-ceph.rst: s/along side/alongside

Signed-off-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>
Revert "qa: add an fsx run which turns on kernel debugging"

This reverts commit 29c33f0c057acc4e0f4e5022c97553a2dc095b21.
We don't need the debugging any more, and having two separate fsx runners
already caused one update-in-the-wrong-place issue.

Signed-off-by: Greg Farnum <greg@inktank.com>
Merge pull request #2087 from theanalyst/doc/typo-fix

doc: Fixing a few typos in docs

Reviewed-by: John Wilkins <john.wilkins@inktank.com>
Merge pull request #1905 from leseb/doc-rbd-icehouse

doc: rbd icehouse updated. Need to remove duplicate section.

Reviewed-by: John Wilkins <john.wilkins@inktank.com>
doc/release-notes: v0.80.2

Signed-off-by: Sage Weil <sage@redhat.com>
doc: Clean up formatting, usage and removed duplicate section.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Added keyring location note to resolve pull abandoned pull request #1946.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
rgw: modelines

Signed-off-by: Sage Weil <sage@inktank.com>
doc: Added CentOS/RHEL install for git.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
Merge branch 'master' of https://github.com/ceph/ceph
doc/changelog/v0.80.2: include tag

Signed-off-by: Sage Weil <sage@inktank.com>
mon: OSDMonitor: limit tier-specific pool set/get on non-tier pools

Fixes: 8696

Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>