ciao-launcher: Split docker.createImage
ciao-launcher: Split docker.createImage

The function was already quite large and will need to be modified in
some upcoming commits to add support for mounting ceph volumes within
docker containers.

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

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