Merge changes I7b4e1ed1,I8a91c3f7,If78d20a5,I55431ac7

* changes:
  init: Add support for assigning system properties to system properties in init.rc
  init: Fix the init.rc import command
  init: Allow wildcards in property triggers by using * for property value
  init: Add support for writing system property value to a file in init.rc