Adding a murano-init script to install murano-agent by cloud init
in the LinuxMuranoInstance.
Change-Id: I080fe14a61b9af468ba1ae2e26dd85196a563449
Targets-blueprint: cloud-init-deployable-agent
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