Add missing depend on uuid

`uuid` is clearly referenced in the `CMakeLists.txt` as well as `map_saver.cpp`. It obviously needs to be a build dependency, but must be a run dependency as well for the library to be present.

`uuid` is in rosdistro: https://github.com/ros/rosdistro/blob/master/rosdep/base.yaml#L2569

It might make sense to make a separate rosdep entry for the devel package someday. Not sure where else `uuid` is used.

Thanks!