payloads: Consistently use the compute status string for ciao STATS
payloads: Consistently use the compute status string for ciao STATS

Without doing so we will constantly have to translate ciao STATS
strings into something that's OpenStack compatible.
By using the compute API defined strings, we guarantee a consistent
instance statuses string consistency across the cluster.

Fixes #325

Signed-off-by: Samuel Ortiz <0ba86cb3f08bbb861958e54bd3438887adb4263c@linux.intel.com>

erick0z/ciao,01org/ciao,mcastelino/ciao,mrkz/ciao,matthewrsj/ciao,obedmr/ciao,leoswaldo/ciao,mrkz/ciao,mrkz/ciao,leoswaldo/ciao,obedmr/ciao,ciao-project/ciao,tpepper/ciao,ciao-project/ciao,markdryan/ciao,markdryan/ciao,tpepper/ciao,wcwxyz/ciao,erick0z/ciao,obedmr/ciao,tpepper/ciao,kaccardi/ciao,mcastelino/ciao,kaccardi/ciao,jorgevgut/ciao,rbradford/ciao,wcwxyz/ciao,rbradford/ciao,01org/ciao,matthewrsj/ciao,jorgevgut/ciao,mcastelino/ciao,matthewrsj/ciao,erick0z/ciao,jorgevgut/ciao,wcwxyz/ciao,leoswaldo/ciao