upstream gem simplecov-rcov-text and remove roodi

We specifically comment out roodi for metric_fu
simplecov-rcov-text (also metric_fu) is updated

TODO: delete manageiq repos for both of these

~~NOTE: this will not break travis, instead it will break running metric_fu~~
Note: if this is going to break anything, it will cause a problem with running metric_fu rather than running travis.

/cc @Fryguy @jrafanie