libceph: advertise support for OSD_POOLRESEND

The code has been in place since commit 63244fa1 ("libceph:
introduce ceph_osd_request_target, calc_target()"), and, with the
ceph_{oloc,oid}_copy() issue fixed in the previous commit, is now
in working order.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

include/linux/ceph/ceph_features.h

@@ -197,6 +197,7 @@ DEFINE_CEPH_FEATURE_DEPRECATED(63, 1, RESERVED_BROKEN, LUMINOUS) // client-facin
 	 CEPH_FEATURE_CRUSH_TUNABLES3 |		\
 	 CEPH_FEATURE_OSD_PRIMARY_AFFINITY |	\
 	 CEPH_FEATURE_MSGR_KEEPALIVE2 |		\
+	 CEPH_FEATURE_OSD_POOLRESEND |		\
 	 CEPH_FEATURE_CRUSH_V4 |		\
 	 CEPH_FEATURE_CRUSH_TUNABLES5 |		\
 	 CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING)