consolidate and automate per pool ceph pg_num and replicas
separate osd by type (ssd/hdd) and create pools based on desired type
wired up cinder to know about the different volume types (ssd/hdd)
allow stop action in a restart to fail
use variables for ssd and hdd instead of copy-paste
leaving some doco behind to explains changes
minor typo fix in alternate path
reordering to fix bug on worknode
always create both the ssd and hdd volume types in cinder's config
Merge pull request #65 from pchandra/ceph-pgs

Ceph storage tiers