ciao-controller: handle UnassignFailure
ciao-controller: handle UnassignFailure

If the ReleasePublicIP command fails, we need to handle the failure
notification from the CNCI. Since there's not much we can do about
this, we just log the error. The external IP remains mapped to the
instance internal IP.

Signed-off-by: Kristen Carlson Accardi <047ff8258f0113ece56e5e2fe9e0d987b14c4333@linux.intel.com>

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