Murano engine can not convert unicode file to an ascii string.
Without BOM symbol file can be read as an ascii text file
It is rather temporary fix than a comprehensive solution
Change-Id: Ifec342bfa223c255f5c532560bcb247cf21757ad
Partial-Bug: #1490468
Added ability to modify/remove data from structures (like Heat
templates) via jsonpatch and thus added ability to clean up Heat
resources that was obtained by deleted instances
Closes bug: #1296624
Change-Id: I4db226a5ab00ff363f8b5d44a5d690df942622e8