nightly-world-uclibc: uclibc target
nightly-world-uclibc: uclibc target

[Yocto #5433]

This should add a uclibc world build (which will probably have
some issues at first)

Signed-off-by: Elizabeth Flanagan <86e3219095765dcc0f6f42aef4bd43803a05b796@intel.com>

denny820909/builder,denny820909/builder,denny820909/builder,denny820909/builder