[Trivial] Fix mismatch string format argument
[Trivial] Fix mismatch string format argument

Change-Id: I4de489605ba70170f4e888d5532e9eabb853bf66
Closes-Bug: #1583453

DavidPurcell/murano_temp,openstack/murano,DavidPurcell/murano_temp,DavidPurcell/murano_temp,openstack/murano,DavidPurcell/murano_temp