v15.2.14 Octopus release

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We're happy to announce the 14th backport release in the Octopus series.
 We recommend users to update to this release. For a detailed release
notes with links & changelog please refer to the official blog entry at
https://ceph.io/en/news/blog/2021/v15-2-14-octopus-released

Notable Changes
---------------


* RGW: It is possible to specify ssl options and ciphers for beast
frontend now. The default ssl options setting is
"no_sslv2:no_sslv3:no_tlsv1:no_tlsv1_1". If you want to return back the
old behavior add 'ssl_options=' (empty) to rgw frontends configuration.

* CephFS: old clusters (pre-Jewel) that did not use CephFS have legacy
data structures in the ceph-mon stores. These structures are not
understood by Pacific monitors. With Octopus v15.2.14, the monitors have
been taught to flush and trim these old structures out in preparation
for an upgrade to Pacific or Quincy. For more information, see Issue
51673 <https://tracker.ceph.com/issues/51673>.

* ceph-mgr-modules-core debian package does not recommend ceph-mgr-rook
anymore. As the latter depends on python3-numpy which cannot be imported
in different Python sub-interpreters multi-times if the version of
python3-numpy is older than 1.19. Since apt-get installs the Recommends
packages by default, ceph-mgr-rook was always installed along with
ceph-mgr debian package as an indirect dependency. If your workflow
depends on this behavior, you might want to install ceph-mgr-rook
separately.

* Several bug fixes in BlueStore, including a fix for an unexpected
ENOSPC bug in Avl/Hybrid allocators.

* Includes a fix for a bug that affects recovery below min_size for EC
pools.


Getting Ceph
------------
* Git at git://github.com/ceph/ceph.git
* Tarball at https://download.ceph.com/tarballs/ceph-15.2.14.tar.gz
* Containers at https://hub.docker.com/r/ceph/ceph/tags?name=v15.2.14
* For packages, see https://docs.ceph.com/docs/master/install/get-packages/
* Release git sha1: cd3bb7e87a2f62c1b862ff3fd8b1eec13391a5be

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