fabric: Eliminate unnecessary endpoint options

Now that we have an endpoint attribute structure, it can be used
to configure portions of an endpoint.  Remove duplication endpoint
options used with getopt/setopt.

Cleanup the man pages to eliminate left-over data flow documentation.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Merge pull request #98 from shefty/master

fabric: Eliminate unnecessary endpoint options