travis: Allow launcher unit tests to run without root.
travis: Allow launcher unit tests to run without root.

We need to pre-create the instances directory for launcher.  Otherwise
ciao-launcher will try to create the directory for itself and this
attempt will fail if it is not running as root.

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

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