cmake/modules/BuildFIO: use ceph fork

cmake/modules/BuildFIO: use ceph fork

to pick up the clang build fix. we should use the upstream repo, once the
clang build fix gets merged.

bumping up the fio helps to address following error, as this part was rewritten:

src/test/fio/CMakeFiles/fio_ceph_objectstore.dir/fio_ceph_objectstore.cc.o.d -o src/test/fio/CMakeFiles/fio_ceph_objectstore.dir/fio_ceph_objectstore.cc.o -c ../src/test/fio/fio_ceph_objectstore.cc
In file included from ../src/test/fio/fio_ceph_objectstore.cc:26:
In file included from src/fio/fio.h:18:
In file included from src/fio/thread_options.h:6:
In file included from src/fio/options.h:8:
src/fio/parse.h:128:13: error: arithmetic on a pointer to void
        return ret + offset;
               ~~~ ^
1 error generated.

Signed-off-by: Kefu Chai <kchai@redhat.com>