libceph: initialize rb, list nodes in ceph_osd_request
libceph: initialize rb, list nodes in ceph_osd_request

These don't strictly need to be initialized based on how they are used, but
it is good practice to do so.

Reported-by: Alex Elder <f429030cf5c0faf36fac3d102073b6e63a647baa@inktank.com>
Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@inktank.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs