Merge pull request #3 from dtest/master

Fixes Issue #1: doorman optional parameters.  Also fixes a RMQ initialization bug.
add a fielddata cache size limit as seen here http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/_limiting_memory_usage.html#fielddata-size
install marvel plugin on install
add check to make sure graphite cache isn't growing too big
fix perms on plugins
add elasticsearch checks and metrics
install needed plugins
unique check name and matching schema
cluster namespace for cluster metrics
use metric handlers
remove generic status field, it caught too many things. Need to move this to a more client specific location