`accumulo admin` and `accumulo ec-admin` output hard to read and inconsistent

[dlmarion]

Compared to the output of ./accumulo and ./accumulo-util, the output of the the admin and ec-admin commands are much harder to read. I think there are several reasons:

1. In the ./accumulo and ./accumulo-util output contains two columns that contain the command and a description with a longer line length
2. In the case of other ./accumulo commands, the options are not displayed unless you add the --help argument. When invoking admin or ec-admin everything is dumped to the screen when you run ./accumulo admin --help. It would be more consistent to only show the options when the user runs something like ./accumulo admin changeSecret --help

Additionally, the command names are camel case vs hypen-separated. For example, the non-admin commands are in the form of ./accumulo rfile-info, but the admin and ec-admin commands are of the form ./accumulo admin stopAll instead of ./accumulo admin stop-all.