Update write http template to support global dims
</LoadPlugin>
<Plugin "write_http">
<Node "SignalFx">
- URL "{{.Config.ingestUrl}}/v1/collectd"
+ URL "{{.Config.ingestUrl}}/v1/collectd{{if .Config.dimensions}}?{{end}}{{.Config.dimensions}}"
User "auth"
Password "{{Secret "SFX_API_TOKEN"}}"
Format "JSON"
