BZ #1142483 - osd pool size, journal size params in ceph.conf

https://bugzilla.redhat.com/show_bug.cgi?id=1142483

For POC/dev testing, a value of 1 for osd_pool_default_size and 1000
for osd_journal_size can be useful.
Merge pull request #370 from cwolferh/bz1142485_ceph_osd_pool_params2

BZ #1142483 - osd pool size, journal size params in ceph.conf