This patch removes the need of using both tini and rook binary to run
the main osd container.
By removing this, we know can upgrade the operator image without
restarting the OSD since the osd pod does not use the rook image
anymore.
This patch only works when not running OSD on PVC since they are certain
actions that we cannot achieve with an init container.
A new init container has been introduced to do the activation of the
OSD, the activate files are placed in a empty dir mount and shared with
the main osd process.
Now the main osd process runs the ceph-osd daemon binary directly.
This currently has a few limitation:
* only works with bluestore OSDs
* only works when not running OSD on PVC
Closes: https://github.com/rook/rook/issues/4363
Signed-off-by: Sébastien Han <seb@redhat.com>
Sébastien Han
470798c570