GEOMESA-334, 335 Add zookeepers, instance name and Separate Export from FeaturesTools

zookeepers and instance-name can be added to any command line argument. This is useful for cases where instanceName and zookeepers
cannot automatically be found. Additionally, auths and visibilities have been added to all commands. Finally, Export has been separated
out of FeaturesTools and Tools to add more flexibility in Export.
might be cleaner to have a check above for $2 = debug, and set the GEOMESA_DEBUG_OPTS to an empty string if it's not debug mode... then both debug and non-debug calls would be a single if.