ciao-launcher: Improve attach volume error handling.
ciao-launcher: Improve attach volume error handling.

Previously the root cause of the failure was not logged.  Now it is.

Signed-off-by: Mark Ryan <f16215f7acd0bd7fdc465539215bd574c785b062@intel.com>

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