"Rename" external/libchromeos into external/libbrillo in repo manifest

libbrillo is a duplicate of libchromeos for the sake of "renaming" the
repo (which can't be done directly). So we just add libbrillo and remove
libchromeos from the manifest.

BUG: 25345697
1 file changed
tree: fb89425361ce2cc22899fd268e4bff2c4dda5fb3
  1. default.xml