Update to ceph 0.94.6
Fixes a number of bugs including but not limited to
"Qemu hangs after creating snapshot and stopping VM", http://tracker.ceph.com/issues/13726
"Cannot reliably create snapshot after freezing QEMU IO", http://tracker.ceph.com/issues/14373
"rbd-replay does not check for EOF and goes to endless loop", http://tracker.ceph.com/issues/14452
"Incorrect ETAG calculated for POST uploads", http://tracker.ceph.com/issues/11241
"rgw: missing handling of encoding-type=url when listing keys in bucket", http://tracker.ceph.com/issues/12735
The code has been downloaded from http://download.ceph.com/tarballs/ceph-0.94.6.tar.gz
Debianization has been borrowed from
http://anonscm.debian.org/cgit/pkg-ceph/ceph.git/commit/?h=hammer&id=
300878169869e3ca73051f6ca671d4d209d4cef6
Additional patches:
ceph-disk: fix udev generated symlinks handling, https://github.com/ceph/ceph/pull/7123
rados bench seq: fix failure due to locking errors, https://github.com/ceph/ceph/pull/7817
Change-Id: I1f5e65aeaf954381bbb619d5fbb2b18012b41df6