forked from public/pysim
apply a parameter only when it exists in the template, will be useful for suci Change-Id: I5811ecde4c4e880bb8dbd22fffe23faafcfe36ad
apply a parameter only when it exists in the template, will be useful for suci Change-Id: I5811ecde4c4e880bb8dbd22fffe23faafcfe36ad