omni: hack roomservice to allow adding remove-project entries

adding override attribute in a repostory in dependencies
will add a remove-project manifest entry before the
real project entry

   {
    "remote": "omnirom",
    "override": "android_frameworks_native",
    "repository": "android_frameworks_native",
    "target_path": "frameworks/native",
    "revision": "android-9.0"
  }

  <remove-project name=android_frameworks_native />
  <project name=android_frameworks_native path=frameworks/native remote=omnirom revision=android-9.0 />

Change-Id: Iea8f5486a50441487777bbb650ba4fe2b107d7ff
1 file changed