fix: targets_list is just query result
fix: es_query variable shadows es_query function
plugin for collectd-generated metrics in graphite

allow match regex override plugin name
fix: break out from loop over plugins as well, to get highest priority plugin result in the output
Merge branches 'feat-collectd-plugin', 'fix-es-query-shadow', 'fix-metrics-plugins-loop' and 'fix-target-list'