apply mackerel-client
support hostid in tag
add out_mackerel_hostid_tag plugin
add metrics_tag_regexp option...
fix default host-id file path
add 'custom' prefix.
remove/add prefix option
add/remove prefix is optional
fix
matrics_name option
fix
fix
fix
refine hostid resolver
fix
fix
support service metrics
mackerel-client released. install from rubygems.
To avoid 413(Request Entity Too Large), Send metrics with dividing.
quick-fix: test