Fix the location of unattend template
Fix the location of unattend template

Location of unattend template and
post installation scripts is updated
according to their location

Change-Id: I801cd6817203c3cc2a43dc2ce71acb40012eb7a4
Closes-Bug: #1490150

olivierlemasle/murano,DavidPurcell/murano_temp,openstack/murano,openstack/murano,NeCTAR-RC/murano,DavidPurcell/murano_temp,satish-avninetworks/murano,NeCTAR-RC/murano,DavidPurcell/murano_temp,satish-avninetworks/murano,DavidPurcell/murano_temp,olivierlemasle/murano,satish-avninetworks/murano,satish-avninetworks/murano,NeCTAR-RC/murano,NeCTAR-RC/murano,olivierlemasle/murano,olivierlemasle/murano